Latest Source Location?
 

Hi, I've managed to find 3.1.66 source code which I've compiled but I'm unable to find sources for more later builds, very likely I'm just not using the internet properly but all my googling hasn't resulted in much else other than constantly downloading pre-compiled versions.

I found it on github but that seems somewhat dated, which would have been somewhat ideal if I could branch off, and make my own 'hacks' while keep up with the made work going on, if that makes sense.

Any ideas?

3.1.68 is the latest public version of the source code: https://fs-uae.net/download#source
You'd have to contact Frode for a more recent version.

Exactly that is (probably) it.
Master branch, according to "ChangeLog": Version 4.0.x, and pretty much has the same dated Date as the last version released (yet).