I have gotten the beta test boards and have been trying to find information. I am supposed to report on the boards as part of my agreement, but can't do that because I don't have access to the "secret" forum. Every time I try to go to the EEP, it sends a link to my email. I click on the email link and get a blank screen. The only think I can click on is "logout" or a link to "Bobuild" which apparently is the software used to create the beta site. Has nothing been enabled yet? I got the first board weeks ago and am dead in the water without documentation. Thanks!
Hi @fdecker! Now that the board was released to the public, you can find all the documentation in the https://docs.arduino.cc website and use this public section to share your test results! No need to keep it private anymore 
Ironic. I have been trying to get an answer for weeks and was wondering what all the other beta testers were doing. And just as I posted this second message here, they release the boards! LOL. The short beta period surprised me. I am looking forward to seeing if we can port our code fully, but the reliance on mbed is a big challenge.