I too have noticed the same behavior, "microslip." Details are sparse, but I would assume it's clutch slippage to make smoother shifts. Certainly that will wear the clutch down faster. I'm sure Ford has designed the transmission in such a way to last through the warranty period, but after that, who knows. Clutches are wear parts after all.
Also do not expect Cory or any Ford rep to comment. Cory isn't here to answer questions, just to escalate customer issues.