Like we reported yesterday, Palm announced an SDK for its webOS that runs on the Pre and (hopefully) Palm’s next generation of handheld devices. The SDK will initially be available to limited developers but will eventually be made more accessible sometime later this year. Palm has also announced an application from MotionApps that will allow apps running on the older Palm OS to run on the new webOS.

Excerpts from the press release:

With Mojo, developers have the ability to integrate their applications into core webOS functionality, such as linked contacts, layered calendars, multitasking, notifications and GPS capabilities. webOS applications run natively on the device. They don’t depend on any server connection to run and can cache data locally. Providing developers with the freedom to integrate unique webOS functionality and services into their applications paves the way for a rich catalog of innovative offerings for webOS users.

Palm webOS is a new kind of mobile platform. Standard web technologies, such as HTML, JavaScript and CSS, are deeply integrated into the webOS architecture, enabling a much broader developer community to easily create compelling applications. The ability to customize webOS applications will appeal to developers and ultimately benefit consumers with a unique and differentiated user experience.

When the Mojo SDK is broadly released later this year, it will include a developer-facing offering called the Mojo Messaging Service, an XMPP publish/subscribe service. The Mojo Messaging Service is an elegant, standards-based way to exchange information over the Internet. When new information is available, it is “published” to the cloud and all interested parties who are subscribers are notified that new information is available. This will allow developers to push live content to their applications or services. The Mojo Messaging Service initially will have a limited feature set and service level that will evolve over time.