The documentation is out, patches are out, and I have commited to implementing a solution using uCMDB 9.05... but all I can find in the partner portal is ucmdb 9.04 - bundled in the hp_ucmdb_CM_9.30 package.
Where can I get 9.05?
Try looking in HP SSO Patches download section for the 905 Service Pack UCMDB_00080.zip. It contains 905 server, probe installers and upgrade package. The zip is about 1.5Gb.