I just upgraded both my new Surface Pro 3 and my Dell T7500 to Windows 10 Pro. I have also enabled Client Hyper-V on my T7500 which has dual Xeon X5650 processors and 96 GB of memory. I will start creating test VMs on the T7500 next week utilizing my active MSDN to properly license the test VMs.
I hope your Windows 10 upgrades go as smooth as mine did...