Hi all -

I am running Ultegra Di2 10 speed on my TT bike. I'd like to upgrade it to 11 speed. Can someone confirm if all i need to do is:
- buy an 11 speed 6870 Di2 RD
- reprogram the shifters?

Or is there a little more to that?

And can i reprogram the shifters myself, or do i need to take it in to a bike shop?

TIA!