These new ULH route announcements are aspirational. No start date is given. They are implying that 5 new planes will let then start all these routes, but I think that is just PR.

If they push out their grounded 777s in a bit to expand routes, this will backfire. Using the nice DL planes on certain routes is in any case going to cause jealousy and confusion. They should improve their existing product in some consistent manner first, rather than just throwing everything at the wall. My guess is that they understand this, but I could be wrong.