I'm not convinced that we'll be getting a time skip so much as a glimpse of the potential future should things go awry. So far the game has been content to mostly contain established events within a specific bubble - with the only exception being the shift from 1.0 to 2.0.

There would be an immense amount of text and character models/zone models to adjust if the entire game world were to advance multiple years. I don't think we're getting any major revamps for the existing zones - bar Ishgard - for quite some time.