As far as I know, the current beta server names are completely different than the 1.0 server names.

When phase 4 is released, will beta users be able to choose 1.0 servers so they can play with their 1.0 friends?

Or vice versa, if I want to play with my 2.0 friends, the only way that I can play with them is to create a new character on the new beta servers and start over from scratch right?