This seems highly suspicious, especially the recommendation of BitLocker, a product we have little to no evidence does what it says and after PRISM, have no reason to trust[2]; not to mention it being limited to a (very small subset of) Windows platforms vs. TrueCrypt's cross-platform functionality. If this was legit[1], it'd probably be directing people to one of the other TrueCrypt-like programs. [1]The new version…
Or perhaps an optional Microsoft-account feature to back up your encryption keys. Something that most normal users would want, just like they want it on Apple devices? Because a lot of common users aren't going to want FDE if it means "oh and lose your key and say goodbye to your data".
As far as I know, there's only been speculation on what PRISM is. Nothing that suggests it couldn't be a frontend to CALEA or warrant-based systems.