Not the x64 version. New plugins are being written. SACD and ASIO+DSD have been updated. Ape (Monkey) audio is now supported by default.
Foobar now comes in x64 / Version 2 beta
For those who care, I downloaded the new beta of Foobar version 2 and the SACD x64 plugin. I'm sure more x64 components will follow. It's nice to see this software moving forward.