As someone who has watched the DVD-based extended cuts of these episodes for years, I was disappointed to see that the Blu-ray was produced using the episodes as they were originally broadcast on NBC.
But at least for me, that omission is well made up for by the fact they have produced actual 16:9 versions of all episodes, instead of giving us 1080p transfers of the 4:3 original broadcast. And we're not saying they simply cut a 16:9 mask out of the 4:3 broadcast edit's frame; they appear to have gone back to the original 35mm and made new 16:9 edits. Meaning you're literally seeing more of the set and scene in frame than the 4:3 broadcast edit showed. And it's awesome.
For what it's worth, most of the extras (gag reels, interviews and clips of memorable guest stars, etc.) are still only DVD 480p quality and 4:3.
I did not expect that the Blu-ray version of a show running from 1994 - 2004 was going to go back and produce actual 16:9 versions of a show that didn't broadcast that way. I cannot overstate what a pleasure it is to watch this great show in such improved definition. One can only hope that a certain show with Will, Grace, Jack and Karen will follow this example one day in producing a Blu-ray release.