The YouTube ad was longer than RiskyCB's latest Scholomance speed run that took 7.95 seconds in MoP Remix.
You can watch the speed run below.
ConzilFTP's speed run took 11.6 seconds, but it's like comparing apples to oranges. RiskyCB's character is Level 70 with an 80% speed boost from Pursuit, while Conzil's char is only Level 20.
Conzil also talked about this in more detail on Reddit.

July is upon us and it's time to check out the month's Trading Post items live ingame! Lord Momentor is doing his duty with a new video, as he takes us through all the gear.
Whether you're just curious to see what's arrived or maybe even looking to see if there's something worth coming back to pick up, we're taking a look at all the rewards in movement. From the scuba gear to the (very) creepy fish mount and the amazing Naga aquarium backpack, there some non-aquatic stuff in there as well. So let's take a look:
And this month's bonus reward, a naga pet:

Finally, we've summarized the Warrior changes that went live in the latest War Within Beta build!
Latest Warrior Changes
Blademaster's Torment - Activating Avatar or Bladestorm casts Sweeping Strikes and while Avatar is active the other at cooldown of Cleave is reduced effectiveness. by 1.5 sec. Immovable Object - Activating Avatar or Shield Wall casts the other at reduced effectiveness. with a duration of 4 sec. Reap the Storm - Deals reduced damage beyond 8 targets. Mortal Strike has and Cleave have a 20% chance to cause you to unleash a flurry of steel, striking all nearby enemies for [ 157.5% of Attack Power ] damage and applying Overwhelmed Martial Expert - Critical strike damage of your abilities is increased by 10% and the amount of damage blocked by your critical blocks is increased by 20%. 10% (crit block amount NYI). Warlord's Torment - Activating Avatar casts Recklessness at with a duration of 6 sec. The additional Rage generation of this Recklessness cast is reduced effectiveness. to 25%. Titan's Torment - Activating Avatar casts Odyn's Fury, activating Odyn's Fury casts Avatar at reduced effectiveness. with a duration of 4 sec. Steadfast as the Peaks - When this health increase expires, you heal for any amount of the original Victory Rush that healed you in excess of your full health. Stamina increased by 5% Victory Rush increases your maximum health by 10% - 0% for 5 sec Odyn's Fury - Generates 15 Rage. Unleashes your power, dealing [ 268% 644% of Attack Power ] Physical damage and an additional [ 84% 188% of Attack Power ] Physical damage over 4 sec to all enemies within 12 yards Berserker's Torment - Activating Avatar or Recklessness casts the other at reduced effectiveness. with a duration of 8 sec. Slayer's Dominance - Stacks 3 times. Your attacks against your primary target have a high chance to overwhelm your target's their defenses and trigger a Slayer's Strike, dealing [ 100% of Attack Power ] damage and applying Marked for Execution, increasing the damage they take from your next Execute by 10% Reckless Abandon - Recklessness generates 50 Rage and Rampage greatly empowers your next Bloodthirst or and Raging Blow.

If you're maining a Warlock, don't forget to check out the latest recap of class changes from the War Within Beta!
Latest Warlock Changes
Unstable Rifts [NYI] - Bolts from Dimensional Rift now deal 0% 25% of the damage dealt to nearby enemies. - enemies as Fire damage. Doom Eternal - Demonic Cores reduce the duration of Doom by an additional 2 sec  and when Doom is removed its cooldown is reset. Death's Embrace - Increases Drain Life healing by 30% while your health is at or below 35% health Damage done by your Agony, Corruption, Unstable Affliction, and Malefic Rapture is increased by 5% 10% when your target is at or below 20% 35% health. Impending Doom - Increases the damage of Doom by 30% and Doom generates summons 1 Soul Shard upon expiration. Wild Imp when it expires. Fel Synergy - Soul Leech also heals you for 15% 8% and your pet for 50% 25% of the absorption it grants. Chaos Incarnate - Chaos Bolt, Rain of Fire, and Shadowburn always gain at least 70% of the maximum benefit from your Mastery: Chaotic Energies. Blood Invocation - The cooldown of Power Siphon is reduced by 5 sec and Power Siphon increases the damage of Demonbolt by an additional 20%. 25%. Ruination - Summoning a Pit Lord causes your next Hand of Gul'dan or Chaos Bolt to become Ruination Ruination Call down a demon-infested meteor from the depths of the Twisting Nether, dealing [ 1,105.84% of Spell Power ] Chaos damage on impact to all enemies within 8 yds of the target and summoning 3 Wild Imps. Damage is reduced beyond 8 targets. Zevrim's Resilience - Dark Pact heals you for [ 9.6% 18.23% of Spell Power ] every 1 sec while active. Dimension Ripper - Incinerate has a chance to tear open a Dimensional Rift or recharge Dimensional Rift if learned. Raging Demonfire - Channel Demonfire fires an additional 2 bolts Each bolt increases the remaining duration of Immolate on all targets hit by 0.2 0.5 sec. Malediction - Your Increases the critical strike chance of Agony, Corruption, and Unstable Affliction gain by 5% more critical strike chance from all sources. Perpetual Unstability - The cast time of Unstable Affliction is reduced by 20% Refreshing Unstable Affliction with 8 or less seconds remaining deals [ 23.29% 268.92% of Spell Power ] Shadow damage to its target. Soul Link - 10% 5% of all damage you take is taken by your demon pet instead. Demonic Tactics - Your Increases melee and spell spells have a 5% increased chance to deal a critical strike strike chance for you and your summoned demon by 5%. You gain 10% more of the Critical Strike stat from all sources. Mark of F'harg - Your Summon Vilefiend becomes Summon Charhound and learns the following ability: Infernal Presence Cloaked in the ever-burning flames of the abyss, dealing [ 23.98% 15.99% of Spell Power ] Fire damage to enemies within 10 yards every 1 sec. Gorefiend's Resolve (New) - Targets resurrected with Soulstone resurrect with 40% additional health and 80% additional mana. Doom (New) - When Demonbolt consumes a Demonic Core it inflicts impending doom upon the target, dealing [ 268.75% of Spell Power ] Shadow damage to enemies within 10 yds of its target after 20 sec or when removed. Damage is reduced beyond 8 targets. Consuming a Demonic Core reduces the duration of Doom by 2 sec.

Here are the latest Rogue changes that went live recently on the War Within Beta.
Latest Rogue Changes
Assassination ability damage increased by 15%. Outlaw ability damage increased by 20%. Subtlety ability damage increased by 20%. Flensing Knives - Slice and Dice causes your Backstab to deal an additional [ 20% 40% of Attack Power ] Plague damage. Darkest Night - When you consume the final Deathstalker's Mark from a target, gain 60 40 Energy and your next Envenom cast with maximum combo points is guaranteed to critically strike, deals 30% 60% additional damage, and applies 3 2 stacks of Deathstalker's Mark to the target. Hunt Them Down - Autoattacks against Marked targets deal an additional [ 10% 20% of Attack Power ] Plague damage. Lingering Darkness - After Deathmark expires, gain 3 30 sec of 10% increased Nature damage. Deathstalker's Mark - You may only have one target Marked at a time. Ambush from Stealth applies 3 2 stacks of Deathstalker's Mark to your target. When you spend 5 or more combo points on attacks against a Marked target you consume an application of Deathstalker's Mark, dealing [ 30% 60% of Attack Power ] Plague damage and increasing the damage of your next Ambush or Mutilate by 10% 20%. Flawless Form buff duration increased to 12 seconds (was 6 seconds). Unseen Blade damage increased by 36%. Nimble Flurry (Outlaw) now increases Blade Flurry damage by 15% (was 10%). Nimble Flurry(Subtlety) now deals 40% of listed abilities’ damage to nearby targets (was 15%). Nimble Flurry (Subtlery)now includes Echoing Reprimand, Goremaw’s Bite, and Unseen Blade in addition to currently listed abilities. Tooltip will reflect this change in a future update.