Using 1.0 with Dreamweaver CS6 what am I missing out on?

Using 1.0 with Dreamweaver CS6 what am I missing out on?

Hi guys, I am rather new to jQuery Mobile, and the whole programming/developing world.  I am currently a student of Interactive Digital Media and I am curious to know, what am I missing out on by using Dreamweaver CS6 which runs jQuery Mobile 1.0?  

I understand that 1.4.4 has just been released.  How important is it that I put my focus into learning the newer versions rather then the older one that I have been using?

I really want to extend my knowledge in this area as well, so if you guys have any tips for me to help me progress through my learning curve, let me know.

Cheers,

Tutty