I did a search for "MAC summer collections" and came up with this thread that outlines when the collections are coming out and what the names are...scroll to the third post I think.
FYI I work for Estee Lauder (they own MAC) and have the fall trends "Look Book" that I can email. I'm not sure if I am allowed to post it, so if you want the book you can respond privately with your email I will send it.