I have no information, but I'm glad you started this thread. It will be a 'first' not just for GE members, but also for CBP. Hopefully there won't be bugs to work out.

I'm also curious how it will work for NEXUS members. Unless things have changed, there's no 'renewal' interview with NEXUS. In fact, I had a friend who got NEXUS immediately after it started (it sort of replaced the old CANPASS that went away after 9-11). He let his NEXUS lapse for a couple years, then when GE started up, he wanted to get a new NEXUS, then GE (it was cheaper that way). The original NEXUS didn't even have a number on the card, so when he re-applied, he called an 800 number in Canada, gave the appropriate info, got his original NEXUS number and renewed online - no new interview, even though there had been a 2-year lapse.

As soon as his NEXUS was renewed, he applied for GE, but he didn't actually get an 'interview' at the time, he just had to go in during office hours and submit his fingerprints.

Hoping it will be as simple this time around (for both NEXUS and GE).