Back_Blast

I checked the link to SoD out of curiosity and noticed it's at 3.0 now. I am using 2.7. How do I 'upgrade'? Just recreate with the new SoD installer or do something else? And what changed? I saw the release notes but they were not overly detailed on what changed between 2.7 and 3.0.
I will say I love SoD and big props to Gnarly for creating them!