best practice for releases/iterations

I'm working with scenario 2+. I read all the tutorials and articles about JDI and branches (https://www.sdn.sap.com/irj/sdn/weblogs?

blog=/pub/wlg/2408) but I couldn’t find the answer about how to approach small versions and releases. Working with JDI, what is the best practice for small versions and for releases? Should I create a new track/branch for each release (1.0, 2.0) ? What should I do for iterations/small versions (1.1, 1.2, 2.1)? Could you tag a group of DCs so then you could return to that tagged version?

Thanks a lot for your reply!