Many of the updates have introduced bugs that, from an outsider's perspective, ought to have been obvious. If I were a gambling man, I'd bet they don't do any kind of automated testing. Add Notch's peculiar reservations about Git to that, I suspect that agile practices are way too advanced for their team.

I'm just speculating of course, as are we all. Just saying that from my perspective, they don't look like a team using agile practices. They don't look like a team using any kind of standard industry practices at all, really.

Disclaimer: I love Minecraft, play it all the time.