Does an 2.0 to 2.1 Upgrade Guide Exist?

I’ve seen numerous posts/threads on problems that need to be resolved when upgrading from 2.0.x to 2.1.x Seems like at this point the most common upgrade (other than 2.1 to 2.1.1) is 2.0.15 to 2.1.1. Has anyone created some sort of Tips & Tricks document outlining the most common issues you’ll run into and where applicable how to solve them? Sort of an upgrade checklist of things that need to be done/fixed when going from 2.0.x to 2.1.x?? Otherwise people have to spend hours and hours sifting through all these threads and posts.

If one doesn’t exist, can someone point me to the best thread to get the skinny on all the challenges we’ll face?