Temptalia has a list of upcoming collections and various info. As far as what the "must-haves" are, Crest The Wave is one that should be on everyone's list, as are the Technakohls because they go on rather sheerly, making it a nice quick pop of colour. The rest though, it honestly depends on what you are needing. The lipsticks are all avoidable and easily dupeable, and the lipglasses are nice everyday ones, but there have been similar things released this year. The eye quads are pretty. Some people complain about pigmentation issues, but you should be using a base every day. The highlight of them is the In The Gallery (purple quad). The Photorealism (green) is a very dark, neutral green-it's not a peppy or pastel green. It's nice, but I skipped because I rarely ever do greens. The Notoriety (neutral) has some bad finishes on some of the shadows, but it's a great thing if you need a quad that is basic shadows-nothing too fancy.
As far as the shadows, I recommend each and every one of them, although like with the quads, you want a base. Of the pigments, Brash & Bold is the best. Push The Edge is boring, Cocomotion is a repromote, and Heritage Rouge is permanent at the PRO stores. As far as the glitters, they are all perm at PRO, too. Reflects Rust is the best, although Reflects Copper is nice. Fuschia is pretty, but a little chunky for everyday use. Gold, same deal.
For the most part, I am skipping the fall collections-I just need VAE and the thermal mask. I may get a grease paintstick if money allows, but it's not a necessity. The holiday collection looks decent, though, and I am hoping to get some Napoleon Perdis and Urban Decay to fill out my collection.