I agree with Ars that the VisualStudio changes are bad, but is there any confirmation that the SDK change isn't temporary/won't have an official solution by the time of shipping? Microsoft has distributed the C++ compiler for years; it'd be very odd for them to do an about-face now. This reminds me off the uproar when Xcode 4 was suddenly a $5 purchase...except that it wasn't for users on the newer OS, when it actually shipped.