During the WPC 2014 Keynote Microsoft COO Kevin Turner showed the following slide and commented it:
Hyper-V is eating VMware’s lunch
Hyper-V has now 30,6% market share in x86 Server Virtualization which means Microsoft won 4.6% since the release of Windows Server 2012. VMware is now at 46.4% market share which means they lost 5.1% market share since the release of Windows Server 2012 Hyper-V.
And this because of good reasons, like great features and 4 times lower cost than VMware. So if you are still running VMware you should definitely have a look at Hyper-V now!