What's interesting in those releases? Well, first of all, there's an updated Nali Castle flyby, featuring a flight through the inner halls of it. Furthermore, there are 4 additional unseen cutscenes in Unreal. They reveal a lot more info about the main character of the game, Prisoner 849, as well as story before the start of Unreal. The name of P849 will be revealed (in fact, I can tell you what it is right now: Maylia Simonyéz Fitzgerald), as well as why she was a prisoner. Strangely, the story shows that she is a Skaarj Hybrid (although she looks like Gina; that also shows how they managed to secure this info, remember UT1's "CLASSIFIED DATA" descriptions of all hybrids? And that also conflicts with UT2004's AS-Mothership description, which said that Humans met Skaarj on Na Pali, unless no humans knew about these genetic experiments).
Moreover, there will be addition voices for Skaarj - much like in UT1 and UT2004, they were supposed to speak English (with Skaarj accent
Interestingly, in Beta 1 of Unreal, you can actually see the Activision logo during the flyby. It seems that initially Activision was supposed to be the publisher of Unreal, but due to some disagreements between Epic and Blizzard (about the Necris), Epic switched to Infogrames. Another interesting thing is that the first Alpha versions of Unreal were held in 5 1/2" floppies (compare that to UT3 sizes
Also, there are all the lost monsters there, like Dragon and Big Man.
As for when it will released and by who... It's the same as with Unreal II betas, I won't say the source publicly due to spam prevention



