Yesterday I created a GMail a/c (email@example.com) for myself. Thought would inform you all about that.
If you also have an active blogger a/c (www.blogger.com) you could see the invite for creating a Gmail account immediately after logging into the site (blogger.com).
If at all you don't have an blogger account check the heading "Interested in an account" here. I guess that would help you to get a GMail id at some later date!!
I was actually wondering if Google gives 1 GB of space to each user how big their servers needs to be?!??! Won't they run into storage problem within few months after they release it for public?? At that time I got to see the post from my good old friend Pandurang Nayak which had some interesting facts about GMail !!