This is something many thought would never happen
The leveling experience is so different between PvE and PvP that transfers to PvP servers have always been blocked. However, Blizzard announced today that they are opening up paid transfers from PvE to PvP starting immediately. This may have something to do with the hype Warhammer is getting with much more PvP based environment. This will surely make many players that want in on PvP action but were on a PvE server very happy! It may however make players that leveled on a PvP server quite upset. We will have to wait and see.
Providing a smooth and enjoyable experience for all players is always a priority for us, and we are continually re-evaluating our policies and programs to do so. As the state of the game has matured substantially since the inception of Paid Character Transfers, we will now be allowing PvE-to-PvP transfers on a full-time basis to provide players with more mobility and freedom to easily play with their friends.
Keep in mind that all of the other standard cooldowns and restrictions will continue to apply; we're just opening the option to transfer characters on Normal realms to Player-vs.-Player realms. Please review the Paid Character Transfer FAQ if you have any questions on how this service works.
You can use this service at any time by visiting your Account Management page and selecting the "Paid Character Transfer" button.