Where did you see this?
AFAIK, here’s what the official post says:
"Your character is not necessarily lost if you die, however. After dying on a Hardcore realm, players will be able to choose to utilize the Free Character Move service and move their dead character to a non-Hardcore Classic Era realm. Once the move is complete to the non-hardcore realm, that character may resurrect as normal, but the way back to a Hardcore realm will be closed to them."