From the Twitter feed of Patrick Nielsen Hayden at Tor Books:
James Frenkel is no longer associated with Tor Books. We wish him the best. We’ll be contacting the authors and agents Mr. Frenkel worked with to discuss which editor here they’ll be working with going forward. This process will take some days or even weeks, so please be patient if you don’t hear from us instantly. Finally, if you had something on submission to Tor via Mr. Frenkel, you’ll need to resubmit it via some other Tor editor. If you don’t have a particular editor in mind, you can re-submit it via Diana Pho (firstname.lastname@example.org) who will route it appropriately.
This has been, as they say, a public service announcement.
Meanwhile, I’m getting ready for this weekend’s Readercon (in a hotel! with air conditioning! never mind the literature — the air conditioning!)