CSR is now a part of T-RackS Custom Shop. To get access to the 64 bit support of the updated CSR version, either in the suite or as single plug-ins, you have to have T-RackS installed. Of course the CSR modules can be still be used as singles in compatible DAWs without the need to run T-RackS CS.
So you can now unlock the new version by doing the Restore my Gear process in your Custom Shop and the old plug is not updated. The new plug in has to be installed, that means having T-RackS CS properly installed and the CSR collection unlocked.
The previous CSR you have installed will still be usable (in fact it will appear in DAW's plug-in menus together with the new version), but only the new one will work in 64-Bit mode.