Looking at the Downloads page at quickfixengine.org, the latest release there is 1.13.3. This appears to be about 4 years old.
It looks like active development moved from sourceforge to github at some point after that, and the github repo appears to be actively updated. There are, however, no releases or tags more current than 1.13.3.
What do people do if they want the latest stable release? Do they just pull from the github master? Or is there somewhere else to go for something like a current stable/versioned release?