AMGX current version

I am confused about current version of AMGX and download location.

If I follow link, I end up on AMGX trial download page, which says
“Updated January 2015”, and has download links like, which downloads what seems to be 2014 version ( with only headers and .so library.

Github seems to have newer version. It is also available to anyone, whereas AMGX webpage allows downloads for Reg. Developers only.

Is Github the location to get the AMGX from?