Jsow/jassm

As I understand from the news article about the B-1 upgrade in June’s AFM, this weapons are actualy the same- only the JASSM is propeled, and the JSOW is not. (like,for example the GBU-15/AGM-130 or GBU-16/AGM-123?)
Is this correct?
Are this 2 weapons virtualy the same in other areas?

thanks