Yeah, 2.5.something. I'm currently signed out, and can use the app (Publisher is the one I just tested) just fine. If I go to my Account page, it tells me I'm signed out, and it has a little message noting that I don't need to be logged in in order to use my purchases. I've never bought anything through their store, so I have never encountered any login gate.

Anyway, they're currently very lenient, but my guess is that that'll go away before long.