Good to hear that Microsoft is moving toward open-source. It seems high-level management's perspective has changed. I have played with F# and loved it especially because of its type-inference feature and the fact that you don't need to put curly braces (it's like python in that regard).
Wow! 60% increase! That's awesome and promising. I hope it also benefits applications which are doing heavy computations (although most of these apps offload their computation to a server).