Here's the amount of time that elapsed between the creation of a region-locked Eastern European sub and launch day for the five most recent Final Fantasy releases on Steam:



IX: A little over three months

VI: Two weeks

Lightning Returns: A little over a month

V: Roughly a week-and-a-half

Type-0 HD: A little under a month



The gap isn't exactly consistent and there's a lack of general activity on the X HD/X-2 HD app in recent times (prior to today, the last time the app was updated by Squeenix was last August), so I'm inclined to believe that release day is still months rather than days/weeks away.