welcome back! glad to see you here.
fhu is a different game run by a completely different dev team after they got access/permission[depending on who you believe] to the source code of fh.
there was some tension between games but it's all been smoothed down and we now leave each other be.
usually there's 30 or less people on fh these days. the login page update and aforementioned 2016 map update did cause a decline in numbers.
best wishes to your studies, hope this helped.
The reason why there is another FH-like title is due to creative differences on varying levels.
Boiled down, access to FH's code was gained by our x-coder and used to create a game within the same vain as FeralHeart, but updated in a way that suits it's dev members and gained community.
FH has it's own, rather large, update in the works, however there is no ETA or spoilers to show yet.
Razmirz won't even allow a release of a map pack for the old maps
Not released by Raz himself but a map pack containing all the old maps: Linkie (https://feral-heart.com/smf/index.php?topic=68602.0) There are also other downloads floating about you can get.