I just got some updates from some MVP blogs; Microsoft have decided to release a R2 version of Office Communications Server 2007 by the end of 2008. This was not planned in the original product roadmap, and the next release should have been OCS 2009, by the end of 2009.This is great news! The R2 release is going to contain contain a lot of the features that we have been waiting for. especially about telephony handeling and routing. Sure there will be alot of bugs fixed as well in the R2.
Please note that this information is based on second hand information, and has not been confirmed by Microsoft