1) Some will be. Others won't be. Some are already exportable, but you will suffer consequences if exported without permission. Perhaps later in the future they might all be released. Definately not promising that though.
2) The progress on the mod is usually fairly fast. At the moment it's moving at average/slow speed, but once I find a GOOD site to upload large files to for others to download (Rapidshare, Filefront, and Yousendit.com all suck and have extremely horrible bandwidth.) then I can pass the mod to triggerer, Saitek, who will fix many bugs, add couple systems, and add some other stuff as well. The team has been quite active and eager for their turn to work on the mod. Progress with communication and actually getting things done is going pretty well too; although it could certainly be better.
3) No release date still. I actually don't have any predictions of the next open beta because we want to include so much more new stuff and fix as many bugs as possible, that way it really impacts the fans of Wc3:WoW and gives a good strong WoW feel. A friend of mine said that I should definately release it during Christmas time... and I just might do that! So look forward to Christmas for an extra present!

Will it be released before Christmas or have a chance of that happening? Definately not! Too much work to get done at the moment to even think of the possibilities.
Should you expect screenshots of
new areas? Well I'm going on vacation starting August 1st and after that progress on terrain won't be moving at all. But after I come back, I'll try to get some shots of Elwyn Forest and maybe RFC as well up.
PS: I'm going on vacation starting August 1st. I'll be gone for two weeks. I may be able to get on THW though and be able to answer your questions and so on...
~Craka_J