No, this does not impact the strategy game. That game was just given a release date: October 9. You can breathe easy.
Specifically, parent company Take-Two Interactive announced XCOM is scheduled for release during fiscal year 2014, which lands between April 1, 2013 and March 31, 2014. So, a ways away.
The company adopted a similar strategy with the soon-to-be-released Spec Ops: The Line, choosing to delay and significantly retool it, rather than just releasing what it had. It’s unclear whether the extra time will prove valuable for Spec Ops: The Line, but at least Take-Two gave it a shot.
XCOM looked significantly different between its original showing in E3 2010 and E3 2011, and to be honest, I liked both versions. It’s a radical departure from its strategy roots, but we’re getting that, too. Everyone wins!