I am currently about 40% of the way through the Seventh Astral Era MSQ; Heavensward seems a long ways away.

I am enjoying the story, but some of these quests are pretty long-winded and silly. It feels like I've gone from the epic hero in the MSQ from level 40-50ish back to a FedEx driver of the early levels.

Part of me is worried that by the time I finish the 2.1-2.55 quests, 4.0 will be out and the level cap will be increased again. I know the details are scarce, but roughly how far away are we from 4.0? This is probably a dumb worry to have, but it seems like a lot of work just to get to the expansion pack content with everyone else. Should I be worried or is it a long ways away before 4.0?

For those who are level 60 and are done of 2.55 MSQ, how long did it take you?