As a part of WS2012 and System Center 2012 SP1, Microsoft are introducing their network virtualization feature. You can read more about it here –>
http://technet.microsoft.com/en-us/library/jj134174.aspx In terms of virtualization it allows to run multiple virtual networks on a physical network.
As a part of Microsoft’s investment to this solution, F5 is coming with a Gateway solution that can work in conjunction with Network Virtualization.
You can read more about it here –> http://rcpmag.com/articles/2012/09/25/f5-microsoft-network-virtualization-gateway.aspx The gateway is used to connect the virtualized network to the non-virtualized network.
F5 Has already been good at developing solution which has support for System Center (Own integration packs for Orchestrator, MP for SCOM, LB profile for SCVMM) and now this, it will be interesting to see how this works out, and if Citrix is working on a solution like this as well, since this will be a core component for a future Windows infrastructure.