The CyanogenMod team claims to have gotten Android 2.3 (Gingerbread) running on the HP TouchPad. As was noted earlier, developers had appeared to be nearing a first port of Android on HP's now dead webOS tablet.
A post and video on the RootzWiki website show an Alpha build of the CyanogenMod 7 firmware running on the TouchPad. CyanogenMod is arguably the most popular Android custom ROM. CyanogenMod 7 is the release based on Gingerbread.
Developers are quick to note that the ROM is "extremely Alpha." Ultimately, the team would like to develop a solution that could allow an end user to multi-boot into webOS, Android, or some other platform, entirely. Their efforts are hampered by a lack of development hardware (in other words, by the fact that they can't get their hands on any TouchPads).
The video (below) shows Android booting up and launching. A few app icons display on a home screen, but missing is touch-screen support. That, however, is the next thing on the team's agenda, according to the developers.
Additionally, their note says that since the video was taken (below) they'd added lvm support (for managing storage) and what the team called "tablet tweaks."
The group was also quick to state that it wasn't interested in the bounty offered by HackNMod. It also warned followers not to ask for ETAs; that is a big no-no for CyanogenMod. They added that it will be a long time before the group's goals (and the goals of TouchPad owners) become reality. Finally, they said that they will do it right, not fast (sounds a lot like Blizzard and Diablo 3, which folks are still waiting on, ahem, Blizzard).