In case you were thinking about buying a DFocus follow focus for your 5DMrkII, you might want to wait a few more days. I am not saying this because of any quality issue with the product (you all know that I love it) but because of a teaser picture Dave posted on Twitter.
This new product is called the DFocus Pro. It will include a better gears system and be upgradable from the current version. An official announcement should be made in a few days.

By the way, if you are interested in any of Dave products, you should follow him on twitter. He always tweet about incoming products and stock levels.
Canon5Dtips Photography is more than words.
