Maybe its old news but I see the Fusion360 Ultimate version is now available for FREE for hobby use etc.
It's free for 1 year, and they say you can renew after that one year.

But the fine print here is a bit vague, and looks like they can end it at any time?
http://www.autodesk.com/company/lega...s-entitlements

I've seen similar offers before (alibre?), and the free part never seems to last forever.