I hope they can make this project go forward. The RH Designs is the only other available (not DIY) f-stop timer I know of and it costs GBP319 and up. The interface for the RH takes some getting used to, this one looks like it might be a bit more versatile. RH does have an analyzer option but that's much more expensive.
That was a question I had for him as well, as far as the analyzer. Said he had already started to investigate, didn't think it was a difficult accessory to make and implement, but that would be secondary to finalizing the timer itself.