QSSTV 7.1 is the successor of QSSTV 6.x that never made it beyond alpha version. This new generation of QSSTV has a lot of new features. The most important are:

Build on top of Qt 4.7
Camera support
Auto slant correction of incoming images
A large number of new SSTV modes.
New image editor, with support for transparency, overlay and templates
New more stable implementation of the FTP connectivity