Just a quick post to let you know that we've made a prerelease of SDK 1.2.8 available at http://code.google.com/p/googleappengine/downloads/list. This is for local development only, but should still give you an opportunity to try out our new features and let us know if anything looks amiss. Persistence-related features of note:
- Support for inheritance in JDO and JPA (finally!)
- Support for != filters in the low level api, JDO, and JPA
- Support for IN filters in the low level api, JDO, and JPA
All the gory details can be found in the release notes of the download.
Please give it a try!