The following should put an end to this discussion. It was taken from the FAQ located here:
http://www.project1999.org/forums/showthread.php?t=1002
What is the progression?
Aeolwind posted a list of the original progression on live, which the GMs will be trying to stick to. Located here.
This progression will end with Velious. Luclin and other expansions will not be available on this server.