As the webmaster of http://www.palmopensource.com , I try to find more details about the new Palm(tm) Linux based OS: WebOS. Right now, the WebOS SDK is not available to everybody, it should be available in a few weeks, but something interesting has happened: The Palm Pre root filesystem can be downloaded here: http://palm.cdnetworks.net/rom/pre_p100eww/webosdoctorp100ewwsprint.jar
An interesting thread about that has started here: http://forums.precentral.net/web-os-development/184378-ok-rom-comes.html
Now I think it's a matter of days before this rootfs can be booted with QEmu and free/open apps start to be written for WebOS !
NEWS: And now the Mojo SDK has leaked also ! http://forums.precentral.net/web-os-development/189062-mojo-sdk-download.html