Blizzard just posted their Black Friday sale! They are offering up to 67% off on Battle.net games, so let's take a look at the offers, valid through November 27th!
Sale (Source)
It’s time to kick off the end-of-year shopping season with dragon-sized discounts and deals on some of your favorite games on Battle.net.
Now through November 27, we’re serving up savings so you can dive into your next epic adventure. Maybe something on your Wish List has gone on sale, maybe there’s a specific in-game goodie you’ve been meaning to grab, or maybe you’re simply in the mood to embark on a brand-new journey into the unknown with your gaming friends. Whatever quest you’re on, the Black Friday Sale is here to get you underway.
Visit the Black Friday Sale page on the Battle.net Shop now, or check out an overview of all the deals below.
SHOP THE BLACK FRIDAY SALE NOW
Diablo     
Diablo IV Standard Edition: up to 40% off Diablo IV Deluxe Edition: up to 40% off Diablo IV Ultimate Edition: up to 40% off Diablo II: Resurrected: up to 67% off Diablo II: Resurrected Prime Evil Collection: up to 67% off Diablo III: up to 50% off Diablo III: Reaper of Souls: up to 50% off Diablo III: Reaper of Souls Digital Deluxe Edition: up to 25% off Diablo III Battle Chest: up to 33% off Diablo III Eternal Collection: up to 25% off Diablo III: Rise of the Necromancer: up to 33% off Call of Duty
Call of Duty: Vanguard: up to 60% off Call of Duty: Black Ops Cold War: up to 67% off Call of Duty: Modern Warfare: up to 67% off Call of Duty: Black Ops 4: up to 67% off Call of Duty: Black Ops 4 Digital Deluxe Edition: up to 60% off Call of Duty: Modern Warfare 2 Campaign Remastered: up to 25% off Overwatch 2
Invasion Bundle: up to 33% off Complete Hero Collection: up to 50% off Complete Hero Collection Upgrade: up to 67% off Warcraft Rumble
New holiday bundle: Savory Starter New holiday bundle: Sweet Superior StarCraft
StarCraft Remastered Cartooned Upgrade: up to 25% off StarCraft Remastered: up to 50% off StarCraft Remastered Cartooned Bundle: up to 30% off Nova Covert Ops Mission Bundle: up to 33% off StarCraft II Campaign Collection: up to 25% off StarCraft II Campaign Collection Digital Deluxe: up to 33% off Crash 4: It's About Time: up to 60% off
Blizzard Arcade Collection: up to 50% off
SHOP THE BLACK FRIDAY SALE NOW

We have a surprise announcement from Blizzard President Mike Ybarra! He tweeted that the battle.net friend cap has been doubled in size just now, going from 200 to 400. The change may take a little while to get to everyone but it shouldn't take too long.

A global maintenance is scheduled for later today and all Blizzard services will be unavailable from 22:00-23:00 CEST.

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As many players noticed, there’s an extra maintenance time scheduled for 22:00-23:00 CEST tonight, 6 October.
This maintenance is for a global infrastructure upgrade, so we need to carry it out at the same time for all of our services around the world. We chose this time for having the least global impact, but recognize that it is not ideal for European players, especially those in Western time zones.
We’re hopeful that the actual maintenance will be completed in a matter of 15-30 minutes, and while players will likely be unable to log-in during this maintenance, we won’t need to shut down realms. Unfortunately, we can’t guarantee the stability of the game service during this timeframe.
Thank you.

Blizzard is rolling out a range of discounts on some of the biggest games on Battle.net from now through September 6. Shadowlands is 30% off, you can save 25% on Overwatch, and more.
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Now through September 6, we are rolling out a range of discounts on some of the biggest games on Battle.net. Treat yourself to that game you’ve been meaning to check out, or gift a friend and grow your squad. These deals are now live on the Battle.net Shop; head over there and see what’s on offer. If you’d like to save a click, you can see the complete list of discounts below.
VISIT THE GAME DEALS PAGE
World of Warcraft (deals last through September 12)
Shadowlands— 30% off
Shadowlands Heroic Edition— 28% off
Shadowlands Epic Edition— 27% off
Call of Duty
Call of Duty: Black Ops Cold War— 50% off
Call of Duty: Black Ops Cold War Ultimate Edition— 40% off
Call of Duty: Modern Warfare— 40% off
Overwatch
Overwatch— 25% off
Legendary Edition— 50% off
StarCraft II
Campaign Collection— 25% off
Campaign Collection Deluxe— 33% off
Nova Covert Ops Mission Bundle— 30% off
StarCraft: Remastered
StarCraft: Remastered— 33% off
Cartooned Bundle— 30% off
Cartooned Upgrade— 20% off
Crash Bandicoot 4: It’s About Time—25% off
The Celebration Collection
Essentials Pack— 20% off
Heroic Pack— 20% off
Epic Pack— 20% off
VISIT THE GAME DEALS PAGE

Later today, Blizzard is making Battle.net global, meaning friends lists from different territories will be merged into one, so you won't need to switch regions in Battle.net. This excludes China.
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We’re breaking down barriers. 
We’ve always envisioned Battle.net as a place for players to connect, collaborate, and play their favorite games. Now, we’re realizing that dream on a truly global level.
“When Battle.net first came out, the purpose was to deliver a connected, multiplayer experience for a single title,” says Arron Goolsbey, VP of Platform Engineering for Battle.net. “Fast-forward 10 to 15 years, and Battle.net had evolved into a service that spanned all Blizzard games but was still constructed with the primary notion that players would mostly play with others within their region. The internet has come a long way in the last 10 years, enabling global and cross-platform experiences with high levels of quality. So now, Battle.net is evolving once again.”
Starting today, friends lists from different territories will be merged into one*, so you’ll no longer need to switch regions in Battle.net to talk to your buddies on the other side of the planet. “As Global Battle.net rolls out, players around the world will be able to come together all across the larger Blizzard ecosystem without any hurdles for the first time ever,” says Diana Hubbard, Platform Design Manager. In doing so, they will be able to effortlessly expand their friendships, groups, and communities—paving the way for forging new bonds over our present and future epic gaming experiences. This is just the first step, and it will only get better from here.” To accent this new era of global gaming and social connectivity on Battle.net, we’ve also updated our logo.
 
“We realized some time ago that our players would be better served by a global Battle.net that did away with the concept of regions,” says Jeff Allison, Lead Product Manager for Battle.net. “But breaking down these barriers was a significant engineering task. Now that we’ve done it, we look forward to a future where all Battle.net players can communicate and game together no matter where they are.”
Battle.net’s global updates also include cross-platform functionality. This has given our game developers the ability to let you play with others between PC and console seamlessly. Overwatch players will be the first to experience these new cross-play capabilities; for more information, check out this blog.
“You will be able to make friends anywhere as games published on Battle.net begin to utilize this evolved experience,” says Goolsbey. “We look forward to a future where billions of players worldwide can make friends and play together, regardless of where they are and what device they play on.”
These backend updates to Battle.net will also enable developers to build even more globally connected experiences for our players in the future, so stay tuned!
 *Excluding China.