Boy I hope you're right, trekker. That would be very, very cool. A wonderful surprise it would be.
Unrelated to the blurays, but these newly created (fan-made) HD DS9 clips posted to youtube make me drool...
As much as I think this artwork looks amazing, it's doubtful that a DS9 remastering would include any new shots that weren't in the original.
Just look at TNG. Shot that could have been completely redone simply stayed the same, but in "HD".
The short battle scene is pretty much the same as it was seen in the actual episode.