I have been a bit slow to get these announcements on my blog - but hopefully this post will cover most of the latest announcements
Hopefully you have already seen the Unified Communications Open Interoperability Program site. It outlines the vendors that have put forward gateways and solution for interoperability with OCS.
The main benefit of this site is that it defines vendors that have had their solutions vigorously tested and ratified by Microsoft to ensure the installation, setup and support is as seamless as possible.
Other interesting news includes a whole load if trials that will allow you to see the features and functionality first hand - they can all be found here.