Hello
Just been reading the huge amount of posts already on guys trying to get the pi3 going. Just wanted to share my experience. I just made sure the pi2 was fully up to date and did a kodi backup before I started. Simply swapped my 16gb class 10 micros sd into the pi3 and BOOM started up as normal. 
Happy as a pig in poo!
Now is there anything else I need to do to make sure the new CPU is being properly utilised or is that all taken care of in the update?
All taken care of, just ensure you have the overclocking set to normal.