Damn the misinformation is rife here today.
The next person who says warhammer is just another wow clone will get a slap in the face so hard, their mouth, nose and eye's will be on the back of their heads.
WoW is a clone of Everquest, DAoC and any other MMO you can think of before its time, Warhammer is the decendant of DAoC which was originally released in 2000 by Mythic Entertainment.
The whole Warhammer IP dates back to the 1980's, originating from good old England. Warcraft actually came about through the warhammer universe, they wanted to create an IP that wasnt quiet as hardcore and gritty, While a majority of the character types are similar visually they are a world apart in reality.
Several features will be familiar in Warhammer to WoW players and the same could be said about features in WoW that are familiar to DAoC or Evercrack players, if it works they its gotta be a good thing, but one thing that WoW never did get right was PvP and thats something that will make WoW and Warhammer Online two totally different games.
Warhammer is all about PvP its the naughty step child of DAoC the PvP powerhouse game which got everything right with PvP and only messed up in the PvE which is easily resolved for todays standards.
The delay on release is a good thing, its what most of the beta community wanted, none of us want a game released that isnt finished and with the huge popularity and press its been getting it pretty much has to be perfect, otherwise all the "wow kiddies" will **** it off something chronic.