Originally Posted by
Nephturi
Ymir's Pass, Tarantia Commons and the 3 T2 instances were designed before the launch, and the devs were still working on them when the game was released. The first really new content in AoC (i.e. that wasn't planned and already worked on before launch) was Khitai. As for the source, check the monthly letters from back then, and various messages of Joel.
Since Mustaine thinks that 8 hours is enough to find 7 years old blog posts and MMO news, i'll let him look for it himself ;)