Howdy howdy. It's-a me, Larry, your friendly neighborhood Python 3.5 Release Manager.
Somewhere around 2 or 3pm tomorrow I expect to tag Python 3.5 beta 1. We'll actually release beta 1 on Sunday, once the binary installers are all built.
Beta 1 is also feature-freeze, meaning no new features may be added to 3.5 without my permission. Since it seems useful to have a specific cutoff time, please stop adding features at ** 8pm Saturday UTC **. (That's 1pm Pacific Daylight Time. It's also almost exactly 24 hours from... now.)
I remind you that this time we're trying something new: we're going to create the 3.5 branch when we release beta 1, allowing feature development (for 3.6) to continue in trunk. At the point that I check in and push beta 1, I'll also merge all checkins from trunk back into the 3.5 branch. After that it'll be responsibility of the person checking in to check their bug fixes in to the appropriate place. So please keep in mind: once the 3.5 branch becomes generally available on Sunday, the usual rules for a release branch will apply: bug fixes for 3.5 should be checked in to the 3.5 branch and get merged forward into trunk.
If you have new features you want to ship with Python 3.5, please check them in as soon as possible!
Thank you for helping to make Python better,