Droid Eris 2.1 leak!
So, some chinaman working for HTC decided to bless us all with some Eclairy goodness, complete with drivers and all! If I'm not completely mistaken this should be very possible to port over to the Hero, so let's see you take your best swing at it, devs, you can do it! I'm even going to try it for myself, I'll post it if I can get it to work (Mind you I'm no experienced dev, but I'll give it a shot anyway, can't wait for a flawless 2.1)
flash the rom in the thread, it will brick your phone. (I didn't flash it, just thought I'd say it since some people don't seem to tell the difference between hero, sprint hero and eris)
edit: apparently the first link is corrupt. There is, however, a patched version later in the thread. Here's a direct link: hxxp://grense.no/android/android.2.1.droid.eris/PB00IMG.zip (Don't flash this one either)