I saw that about a year ago I think, they did "spruce" up some of the shots. I DO wish they would do this type of work more often on the STNG remastering.
The only shot that's significantly different is at 2:30. Everything else looks pretty much like it did in the original.
But it would be nice if for all the CGI updates is when they say "evasive maneuvers" they actually evade and not just sit there.