The latest version (0.9.11.1) was released on February 27, 2012.
We provide Windows binaries and the source code to build both Windows and GNU/Linux versions.
Incompatibility with Anti-Virus Solutions from Symantec
Anti-virus solutions from Symantec (Norton Antivirus, etc) make Scan Tailor unable to load JPEG files. There is nothing Scan Tailor developers can do to resolve this issue, as the problem is on Symantec side.