Wow! I came in today and there are more than 200 updated threads since the last time I logged in. Holy crap.
What was I doing all that time? Rulebook updates! All the main chapters except for #2 got updated.
The biggest change: Bracing is out, and Charge attacks are massively streamlined. You might even think about using them now.
Also: Horse stats got some changes, Construction Actions (4.2) got a lot more useful in preparation for the Mechanik rules, and a whole bunch of stuff in chapter 7 got clarified, especially regarding weapons.
Still to go: Mechanix, Medix, a better intro for the full range of dice in ch. 7, a section for the Almighty Bennies, and more examples for Squad Combat.