I think we'll see the second batch (Prisoner and Goblet) around the time of the first pt. of Deathly Hollows, the third batch (OOTP and Half Blood Prince) when the second half comes out and the Deathly Hollows films maybe a few mos after it first hits DVD.

Has anyone heard anything besides this? I saw these and considered getting them, but the first two are my least fave in the series and I don't want to get them until I know we're getting Prisoner (my fave in the series) and onward.

^ the second batch is coming out when the Deathly Hollows part 1 hits theaters. Thats generally whats been going around. The rest are said to be coming out when Part One hits dvd (5&6) and when Deathly Hollows part two comes out on dvd (7&8) but then again thats only rumors. the artwork for 3-6 is online I'll have to look again for it.

Cover Art for Prisoner of Azkaban & Goblet of Fire

Any specific release date for those?

Do they include extended cuts?

The first two did, the next 6 should as well. Otherwise there'd be no real point to the release.