I'm pretty sure that the Crosstrek XTI was only a rumor that people wished to be true... still hoping for a manual, turbocharged hatchback from Subaru. Nothing was ever officially announced by Subaru.
I actually recall Subaru saying that the Crosstrek is selling too well now and they may consider a turbocharged version in the future if sales slow enough. They have a difficult time keeping up with the demand as is. I can't imagine that it would get a 6 speed version either.. maybe a detuned WRX engine mated to the CVT.