This has been uploaded to both the standalones and the Desura branches. It's basically just a hotfix - now the weapon impact animations (explosions, bullet plumes etc) should be playing properly.
It should be authorised later, although there's a possible synch issue on the Premium Pre-order branch that I've emailed Desura about to get fixed up if it does exist.
There's a known issue with the strength gain formula being too strong in this build, and also I've played with the alien plasma pistols and light drones a bit so they have more bullet-like projectiles to represent their lower power.
EDIT - this synch bug is more serious than we thought. Bear with us, this might take longer than we thought. The standard pre-order branch has access to V14.1, but this is not fully complete, and the premium branch is still on V14. Until the two sets of files are synched with each other we can't finish the update.