Nice! Another one I can think of is how Blizzard releases their patch notes. Gamers are especially picky to game changes, so you can tell they put some thought into how they announce changes. Example:

http://us.battle.net/heroes/en/blog/20481262/heroes-of-the-s...

Makes me wonder if there is a market for a release notes platform for keeping customer up to date, something that's more focused on how changes are announced to customers than bug tickets.