We have shared the GroupWise and Teaming + Conferencing Road maps several times in conferences from BrainShare, GWAVACon, Advisor, etc. I will get Alex Evans to post something in his blog about more concrete plans and specifics for the next release of GroupWise.
I will say... we are not 'planning' new features in the support packs. We want to release the support packs on a schedule and with greater and greater quality. We believe that will allow us more time to do the next release and get it out sooner because we are not spending our time on maintenance work and clean up. New features always brings instability and a longer schedule to a support pack. We want to move away from this model and GroupWise 8 SP1 will be the first release that does its best at following this model.
The next release - code named - Windermere - will be heavy on the the Administration and WebAccess and is planned in 2010.
More details to come - especially at BrainShare 2009!!