I don't recall a lot of heavy swears either.

Digital bits says the 3D version is coming this fall, but that it will be movie only (it will also be a timed exclusive with one of the HW vendors)... so 3D fans will probably be making their 4th Avatar expense in under 12 months when that hits.

1. Theatrical release
2. Original DVD/BD
3. Extended DVD/BD
4. 3D BD.

Now that's how you weaponize your movie sales! I bet the 3D version will be the theatrical version, and they'll release an extended 3D version for Christmas next year.