My Battle.net client just started an automatic background download for Overwatch. The patch checks in at 1.74 GB.
This lines up with previous reports that a roughly 1.74 GB patch was bound for the game today.
The patch will likely include the rumored Halloween Event content. Supposedly, we’ll see new skins, sprays, icons and a Horde Mode-esque game type featuring Omnics.
Once Blizzard officially details this patch, we’ll have the news. Stay tuned.