I'll offer the pesimistic view:
1) Palm's new OS will be Linux/GTK
2) They will want to include backwards compatibility
3) They don't have the Linux/GTK Palm OS finished, but they need to beta test their backwards compatibility
4) The Nokia tablets offer a similar software environment, a released product and a group of users willing to beta test things
5) If they improve this and maintain it for Nokia tablets they would compete with their own Linux/GTK Palm OS when/if it arrives
...
Conclusion: I bet they pull it at some point, probably close to when their PalmOS based on Linux/GTK launches. Has anyone seen a statement that they're commited to this product? Has anyone seen it in a long term roadmap? Are there any press releases that even hint at it an ongoing project?