I would expect the Droid and the Incredible to have at least 1 update in them, maybe more - they were/are both flagship Android phones and were sold to less-price-sensitive customers who will expect an up-to-date OS. It's the cheapskate-phones, as I mentioned, like the Eris, that I wouldn't expect to get updated.

I'm genuinely surprised, though, that the Eris has been updated.