Detours 4.0.1 supports x86, x64 and other Windows-compatible processors (IA64 and ARM). It includes support for either 32-bit or 64-bit processes.
The source code is identical to Build 343 of Detours 3.0. Detours Build 338 and later fix a security vulnerability that has been identified in releases of Detours before 3.0 Build 334.