Apparently, there is eventually going to be a 64bit version, on all platforms probably, but at the moment no. As pointed out, the current 64bit deb just install

Apparently, there is eventually going to be a 64bit version, on all platforms probably, but at the moment no. As pointed out, the current 64bit deb just installs the 32bit version plus ia32libs stuff. They're talking about/ waiting on 64bit V8 (their javascript VM) before starting on the browser bits.