They'll reveal "future plans" and release details "at a time that is correct" for the EU market, says Square. The 3rd Birthday is without an EU date too.
In fact Square Enix are likely waiting until they've decided when to release The 3rd Birthday for PSP in the Europe before the Parasite Eve games get a look in. "We’ll announce future plans and releases at a time that is correct for the European market," they said.
Q1 2011 is apparently the date for The 3rd Birthday to hit the west, or at least so believes Square's US publishing arm. Are you eager for Parasite Eve's HD return?