Main scenario quest line...

[Nutz]

Still a ways to go. A bit more talking then a dungeon, then more talking and Shiva battle, then more talking and such before another dungeon and another battle...then more talking and another 8-man fight. Then a couple of hours of cut scenes to wrap up the current story. Easily a couple of days I think.

EDIT: you're near the beginning of the MSQ added in 2.4. So there's all of that, 2.5's content (which was a bit short), and then 2.55 (which mostly consists of a now nerfed battle and tons of cut scenes -- they literally warn you ahead of time that it's going to be nonstop cut scenes for a very long time so get settled in)