The SCVMM (System Center Virtual Machine Manager) team has released an update to Virtual Machine Manager 2008 beta for Hyper-V RC1. Instructions to download and install the update can be found on Clive Watson’s blog at SCVMM 2008 beta (Update for Hyper-V RC1).
Enjoy and Happy Virtualizing! - Taylor Brown - Hyper-V Test Team
Back in December we released Hyper-V Beta, followed by RC0 in March, RC1 in May and now RTM in June! 
Hyper-V RTM... kako, sta i gdje: Windows Server 2008 x64 Hyper-V RTM Update – KB950050 - THE UPDATE This