Most certainly is classic until Velious comes out.
Skill level 20: Everquest Day 1 -> Plane of Air
Skill level 50: Plane of Air patch -> March 5, 2001 (Before Early Velious Patch)
Skill level 125: March 6, 2001 Velious Patch Upgrade -> End of Server.
http://www.project1999.org/forums/sh...ad.php?t=96039