I have 2.3.x for OS X 64 bit and recently got a notice to upgrade to 3.5, the only options were Windows and OS X in 32 bit and Linux 32 or 64. What happened to the 64 bit version of Tor for OS X? Is it still under development? How do I get a notice about it added to the download page?
Currently there is no 64-bit Tor Browser Bundle for OS X. However, the 32-bit version should work fine on 64-bit Intel CPUs and performance should be equivalent to a 64-bit version.
A 64-bit bit version is planned, but there isn't yet a timescale. See the message below from Roger Dingledine on tor-talk:
Also, I know that for some reason, with the latest version 3.5, the OS X build is only 32-bit. Yes, I know that Erinn has said that they will eventually get around to making 64-bit OS X builds again, but why has this happened in the first place? What broke, or is OS X simply being intentionally neglected?
"intentionally neglected" is a bit strong. We have not enough packaging people, not enough developers, and way too much to do. If 32-bit works adequately for now I totally understand triaging that and moving on for the release. The main race was to get something out with Firefox 24, since Firefox 17 is no longer supported.