They are clearly working out some issues with the Focus ST tunes. I strongly believe that they are waiting to see how the ecoboost 1.6 & 2.0 do under increased load and with more power. The cooling system is very sensitive and may be the weak point on these vehicles. Cobb would rather wait and do research before committing so that no one blows an engine.
These things should not be rushed, and having been a tester for other tunes, etc.. Its not always what its cracked up to be. Being 1st isnt always the best, especially if it results in engine damage. Cobb or SCT would not be liable and I would hate to have to get a new engine, I can only imagine the costs.