I'm sorry i have no response; should ask to developpers.
Then it's also an easy way to know the last available release.
Users that doesn't know how github works should be lonely by the website.
When you're going here, just check out and you know the last release is 3.5.245-g6c9bff11 (at this time) without any GIT command line.
You probably look for a "download" page, but TVH can be build on several hardware.
That means devs should have to build for each platform, they probably a lot of other things to do. :)
That the way i see the build page.