Sun (now Oracle) supplies Java for all other platforms. They have their own release schedules, which are almost always different than ours, so the Java we ship is always a version behind. This may not be the best way to do it.
It's clear that it's all down to Oracle from here, and the sooner they send a clear message to the community about their support, the better. On the plus side, Jobs makes a very good point that Java shouldn't need to lag behind. The cleanest way for Java on the Mac to work is to have it distributed just like the Windows versions.