FWIW, I was hired for the Brasilia back in June and during the interview they said that SKW would keep you in the pool and keep you updated (the last update I received was in January). They also indicated that you would not have to reinterview.

Out of the three hiring pools that I'm in (or have been in), SKW has been the only one that keeps in touch from time to time. The others also currently have a lot of guys on furlough though too.