CMS and Publishing Suite...do they work on 3.7 and 3.8 or only 4.0
 

I am not sure if this has been asked before but I couldn't find it if it was.

CMS and Publishing Suite...do they work on 3.7 and 3.8 or only 4.0?

Id like to be able to use the features of the CMS on my older version while waiting for all the mods i have installed to be updated to 4.0