It looks webOS isn't that dead afterall!

LuneOS has been released for HP Touchpad and some Nexus devices.

What's most important, the system has been rewritten to QT 5.2 / QML!!

It is also built upon libhybris, like SailfishOS and a Virtualbox image should be available for testing and development. I haven't been so excited about webOS in a long time, because it looks very promising (especially the QtQuick 2.x part).