It has been suggested by staff that PVE server characters
may not be transferable to the PVP TBC realm. It is all up in the air, but PVP to PVP TBC will work.
"If you want to be certain, level a character to 60 on the PVP realm." Trying to find the post, but it seemed to disappear.
It is all too soon so suggest one or the other. key words being "may not" meaning the PVE characters later after release
may be able to be transferred. It all depends.
Edit: found Pottu's post
Pottu wrote:Okay, time to clarify few things again since there seem to be many questions.
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2. "Will there be both PVP and PVE tbc realms? Can I move a character from vanilla PVE to tbc PVP?"
Unknown at this time. No details regarding this have been decided. If you want to be super-duper extra sure, level a character you want to play on the tbc PVP realm to 60 on the current PVP realm. But really, this is all up in the air.
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viewtopic.php?f=2&t=36492&start=90#p256371