An ArenaNet blog posted moments ago details how servers will work for the beta and (quite possibly) the future. The price for changing home servers is going to be 1,800 gems, but otherwise it looks like players will have near full reign of whatever else they do as far as ‘guesting’ on other servers!

Server names for EU and US were also announced, which is great for those coordinating with friends and guilds to get on the same server for World versus World PvP.

 

The US servers are as follows:

Anvil Rock Blazeridge Mountains Borlis Pass Crystal Desert
Darkhaven Deldrimor Ehmry Bay Eredon Terrace
Eternal Grove Ferguson’s Crossing Fort Aspenwood Henge of Denravi
Isle of Janthir Jade Quarry Kaineng Maguuma
Moladune Scavenger’s Causeway Sea of Sorrows Sorrow’s Furnace
Steamspur Mountains Tarnished Coast Vasburg Yak’s Bend

 

And the EU servers are listed below:

Abaddon’s Mouth Augury Rock Aurora Glade Blacktide
Desolation Elona Reach Far Shiverpeaks Fissure of Woe
Fort Ranik Gandara Istan Jade Sea
Kodash Kodonur Kourna Magus Falls
Petrified Forest Ring of Fire Riverside Ruins of Surmia
Sharp’s Corner Underworld Vabbi Whiteside Ridge

 

The full article can be found here: http://www.arena.net/blog/choosing-and-transferring-worlds-in-guild-wars-2