The deadline for submitting nominations for the Multi-Party Interim Appeal Arbitration Arrangement pool of arbitrators is May 30. The EU didn't waste any time with their pick, nominating Joost Pauwelyn.
First off, let me say congrats to Joost! I can't think of a better choice.
Second, just about everyone knows Joost, but perhaps there are a few people who don't, so his CV is here.
I hope the other nominations become public. I'll post about all the names that are public, offering whatever background info I can find.