FYI, Notch has said what the next update should contain:
I’ve been able to focus on development a lot the last couple of weeks, and we’re hoping to get the new update out soon. It will include the wolves, the ability to change your spawn point, and a rather ambitious statistics tracking and achievement system. Once that update is out, we’ll spend some time figuring out exactly what to do with the modding, which should result in a nice modding API.
We will finally be able to change our spawn points!
I can't really give a fuck about having an achievement system, though.