How will updates be accomplished in the new EFIS? Front mounted SD card or USB stick? Or will I need a cable dangling from the rear to plug into a laptop?
USB stick. Though, to minimize bezel dimensions, the port will not be on the screen itself. You will not need a laptop in the plane, and you can plug in a USB extension and mount it on the panel or somewhere else in the plane if you wish.
We won't operate off that device like many of the front mounted units do, so the stick will only be plugged in during updates or datalog downloads.