As I understand it, hardly anything is changing from the initial release. He’s just remaking it in HD to match the quality of TESB:R with a few minor revisions such as removing the PT music from the Obiwan vs Vader fight scene that he originally added in his first release.
That aside, there’s absolutely nothing wrong with the opening sequence as it is 😉
.Val
This would include, then, some subtle adjustments to the opening shot. As I recall, Ady tinkered with the Tantive IV’s flight path, sped it up a bit, and made it react to the hit it takes right before the scene shifts to the droids.