[ilyt]

That's not exactly a hard rule, just stuff maintainers do because it is far easier to still have normal flow of unstable -> testing for the freeze period, and keeping 2 ("actual unstable" + "unstable on the way to the new release") would be a big burden for maintainers.

[JohnnyDoe737]

Correct. This is why I said “effectively”. At the end of the day, Unstable does run behind during the freeze period. Same for Testing, obviously