Have not installed this code update yet, but looking forward to better Hyper-V 2012 integration.
So far working with Hyper-V 2012 on UCS M2 blades with a X-IO SSD SAN device for boot and VM Volumes Hyper-V 2012 is pretty rocking. Especially with UCS integration in 2.0(4a) ESX is getting a real kick in the ass. Hyper-V 2012 has a better look and feel than v-sphere and is easier to navigate and administer. Also Hyper-V UCS integration will include 1000v integration into Hyper-V.
Just updated to this code and it went “just fine”