The new border is definitely higher than the old one. IMHO, it suppresses kids from taking a running start to jump in the pool. (Adults, too). Also...they made the deep end shallower. The whole pool appears to be about the same depth - 3.9 feet. The rope that marked the deep end is now gone - or at least it was on Easter Sunday.
The shape of the pool is the same - nothing done with that. They just poured more concrete to make the pool shallower overall, and raised the lip - put in new tile, slide, a spa, and the soon to open "splash zone". With the addition of the slide, splash zone & spa, a lot of seating area was sacrificed.