Diablo III 2.1.0 Today - First Season Begins Friday

Battle.net is currently down for Scheduled Game Maintenance with the expectation that the service will return at around 4:00 pm EDT, bringing the new version 2.10 of Diablo III with it. Blizzard warns that though the patch is "only" 300 MB, but that the "applying patch" phase of the update process may take up to 30 minutes. There is also a note saying Login and Connection Issues noted yesterday are fixed for when things return, and they also highlight a known issue with Stormshields that will be addressed by a future patch. This is a large patch bringing major changes, as outlined in this post with Cliff Notes [sic] on what's new and different, including all you need to know about Greater Rifts, Seasons, Leaderboards, and more. Word is the first Diablo III Season begins on Friday.