And as I said before, they usually give a heads up a week or so before the update is ready to go (i.e., when it's in final testing). But they don't make any definitive promises on very much until they're sure that they can deliver. Whining about it is going to accomplish even less than speculating about it.

The official line is that an upgrade to "Android 2.x" is coming "later this summer." Until it's almost ready to be released, I wouldn't expect to hear anything more specific.