Apparently some of you took a long time to hit max level or have poor memory. Dynamis was not part of an expansion, it was released between expansions with a patch to keep people interested.
Secondly if you stretch what release with an expansion means, I guess you can count sky as being released with Zilart, but it wasn't accessible for months afterward. Ro'Maeve was there the day Zilart happened, but Tu'Lia was not accessible, the story line leading to it was not completely finished and you couldn't access Ru'Aun Gardens until the next moderate sized patch a month after release of the expansion. Not only that but there were no monsters in sky when it became accessible through the storyline. I remember running around in sky and it was completely empty, people explored and mapped it with no monsters and no aggro. The day the patch came to put the monsters in sky, the place was flooded and mass death everywhere from people discovering what happens when you get too close to the blue light. So if 3 months after the release of the expansion counts as expansion content, then yes it was released with Zilart.