Release notes:
http://arcengames.com/mediawiki/index.php?title=Bionic_Dues_Alpha_Release_Notes#Alpha_0.908Close and reopen steam if you want it instantly.
So, this one really addresses a lot of difficulty-level stuff. Been thinking the bots were a bit too easy? You have too much health, they have too little range? This is addressing both, although their range still starts the same as it was.
The amount of chaff parts that you're getting is also way lower, so the customization screens are not so overflowing with parts and you also don't have to spend as much time with that in general.
There are a few other balance-related changes as well, some in your favor, some not. Hacking and virus now require more points from the start, but it's just a flat added fee for them. Your baseline awesome stealth module and (for science) hacking module are both now built-in, so you get those slots back to use for other parts.
Plus there are some new hotkeys, some tooltip clarifications, and a number of bugfixes.