If it's any consolation, this seems to be rolling out to everybody regardless. I'm pretty sure I'd never opt in to beta testing iTerm2, yet here I sit, having just gone through an automatic upgrade. Weird.

(See also https://twitter.com/shitwhocares/status/737938380470816768 for somebody else who seems to be in the same boat)

For historical reasons almost all users are on the beta track. I'm working to improve the situation but this is tantamount to a stable release.

Also, FWIW, there is an actual v3.0 tag: https://github.com/gnachman/iTerm2/releases/v3.0.0

I think the comments here about adjusting to beta3 make the thread upvote-able