@ darkknightkryta
You can start by signing up in the official thread. 
@ Wagram
I doubt it's going to happen, the system has been built too much around having static classes. But like the article says, every class can take on many different roles, so it's not like you're entirely locked up. And even so, you can just play with one character and still see the game. If you only use one character, I'm sure there's still plenty of content to justify the price (with there being no monthly fee and all). And finally, you don't need to redo everything if you create a new character, because the story is built with so many choices that you can play something totally different with a lot of different characters.
There's a bunch of things that let you experience different things and stories throughout the game, so you're not actually just redoing the same stuff over and over. I can show a some video of how much it means with the choices you take if you like. 
@ cr00mz and darkknightkryta
FF14 has a system like that, and there won't be a similar system in GW2.
