I've been experimenting with the new focus stacking tool on my XF / IQ 260 combo and I've concluded that it's still not ready to use reliably, at least not with my setup. Besides usability issues in the design it does not focus correctly and could leave you with a completely missed shot if you rely on it.
Implementation problem - The biggest issue is that the lens does not reliably return to the preset focus distances. For instance, set the near point on an object 48 inches away and the far focus near infinity and set the shot count to 2. The camera takes two frames but the near frame isn't focused at 48 inches - it ends up closer to 60 inches. The motor control counter shows the correct value but the lens' distance scale shows a different position. Simply moving the front control wheel (+- single increments) causes the reading to jump to a much different value, probably where the lens is actually sitting.
Design flaw - The focus stack tool does not allow use of auto focus or even the focus confirmation lights so setting focus with other than live view is hit and miss at best.
I did download the latest FW versions (7.01.1 and 2.01.2 for the body and back) and I don't see any improvement from the original release.
I'm amazed the Phase released firmware with such an obvious bug - twice!