In my opinion, this is a signal. It's almost certainly a result of the NSA issuing a shutdown order to the TrueCrypt team. They first issue a statement that the software is insecure, to deter people from using the previous, secure version. Then they recommend BitLocker, which most likely has an NSA backdoor built in, so as to be easily broken by Big Brother. Why would Windows XP EOL make strong crypto insecure all of a sudden? It wouldn't.