Hi:
It's going very well. We have flown the aircraft - in fact, we flew it from one side of the continent to the other and back again - and I am very pleased with the Apex suite. The integration of information and the manner in which information is visually presented (e.g. the ability to overlay multiple sets of related inputs and consider the 'big picture') is great, and the hardware works very well - the screens are bright and cross-cockpit viewing is excellent.
We're just finishing up the last of the work to integrate new airframe sensors for certain non-avionics related signals. But, all things considered, I would say we are pretty happy with the system - it does everything that Honeywell promised it would, and Honeywell has given us really first-class vendor support at every step along the way. We hope to get the certification finished in the next quarter.