Updated information regarding the bows. I mistook the values and read the backwards. bow weight is DECREASED. Changed my original posts to reflect the changes. 
Rus Bow:  - Damage increased to 18c (up from 16)
Bow:   - Damage increased to 20c (up from 18)
Nomad Bow : 
- Weight decreased to 1 (down from 1.2) 
- Damage increased to 21c (up from 20) 
Tatar bow: 
- Weight decreased to 1 (down from 1.2) 
Horn Bow: 
- Weight decreased to 1 (down from 1.2) 
- Speed rating (draw speed) decreased to 60 (down from 61) 
Yumi: 
- No changes
Rus bow: 
- Accuracy decreased to 99 (down from 100) 
- Speed rating decreased to 56 (down from 58) 
Long bow: 
- Weight decreased to 1.5 (down from 1.7) 
- Accuracy increased to 103 (up from 101) 
~~
Changes to heirloom bows: 
::Missile speed ::
x1 no change
x2 no change
x3 reduced to +2 (down from +3) 
::Damage:: 
x1 no change
x2 reduced to +1 (down from +2) 
x3 reduced to +2 (down from +3) 
::Accuracy::
x1 no change
x2 reduced from +1 to +0 (no bonus) 
x3 reduced to +1 (down from +2)
~~
Arrow Length changes 
::Regular arrows::
- Decreased to 88  (down from 95) 
::Barbed::
- Decreased to 90 (down from 95)
::Tatar:: 
- Decreased to 89 (down from 95)
::Bodkin::
- Increased to 93 (up from 91) 
~Source and credit to zero_Tolerance : 
http://forum.meleegaming.com/general-discussion/changes-for-bows-arrows-and-loom-system-for-bows/