Palm revealed the webOS 2.0 SDK beta today and with it, the company gave an outline of the new features expected in webOS 2.0. The Linux-based OS will support multi-tasking through a feature called Stacks, which organizes similar applications into tidy, um, stacks. webOS 2.0 will also support JavaScript node.js, which opens it up to a variety of existing modules, and improved HTML5 support was also highlighted.