Comment: Open Source support already exists (Score 4, Interesting) 137
While WebOS is not yet open sourced, the operating system is sufficiently open and accessible that there is a significant open source community devoted to it: WebOS Internals (http://www.webos-internals.org) They have hundreds of OS tweaks (called "patches"), custom kernels, new services, apps, etc. Furthermore, WOSI worked with HP to develop the roadmap for open sourcing WebOS.
One of the big things that releasing this framework does is let existing WebOS developers quickly port their apps to Android and possibly iOS and WP7. It may be counter intuitive, but giving developers a way to produce apps for other platforms actually keeps them in the WebOS community. There are already WebOS apps that have been ported to Android (http://www.webosnation.com/first-open-source-enyo-app-jumping-other-platforms-paper-mache-android-flashcards-everywhere). This means that the good WebOS devs (and there are several) will get to keep developing WebOS apps that quickly cross-compile to Android.