http://www.capcom.co.jp/blog/sf4/development_blog/2011/02/15_3039.html
BLANKA
-Rolling Attack is easy to use for surprise attacks and chip, but since there's a large hittable box surrounding Blanka, it's actually easy for it to be stuffed by your opponent's attacks.
-All versions have the same hurtbox, but EX is projectile-invincible
LP Rolling Attack's hitbox
-Normal Electric Attack only has a hitbox at Blanka's head, but because the hitbox spread over the front and back, even if you do a low attack up close, you'll get hit
-You can beat the attack by using low attacks from a distance
Electric Attack's hitbox
ABEL
-Tornado Throw now does 150/170/190 for LP, MP, and HP, repectively (each lost 10 damage)
-Souless does 461 damage (down from 500), Breathless does 431 (down from 480)
-The combo used in the below comparison is
cr.MP → MP CoD → FADC → cr.HP → UC1 (471 damage in AE)
The above combo's damage in Super
The above combo's damage in AE
GEN
-Mantis st.LP's hurtbox from the elbow to tip was cut, give the attack a relatively far-reaching hitbox, making it easy to use
Mantis st.LP's hitbox
-Mantis st.HK's hitbox has been extended to the foot
-You use can Crane cr.LK as a confirm and follow it with st.HK
Mantis st.HK's hitbox
MAKOTO
-Out of Makoto's specials, Fukiage has the biggest change
-The hitbox is extended downward, while the hurtbox on the arm has been significantly reduced
-Since the attack reaches lower, you can hit your opponent with Fukiage during lvl.2 FA crumple, allowing you to use it in combos
LP Fukiage's hitbox
-cr.MK's hurtbox is smaller, making the move easier to use as a frontal anti-air
cr.MK's hitbox
DEE JAY
-EX Jackknife Maximum is slightly buffed
-The hitbox of the first hit has been expanded to the foot, making it easier to land
-The opponent's falling trajectory has also been changed, making it easier for all hits to connect
EX Jacknife Maximum's hitbox
-All normal versions of Machine Gun Upper do more damage, though the mashing difficulty to get maximum damage is slightly higher, so it might feel tougher to do compared to Super
T.HAWK
-diagonal j.MP now has a 6F startup (2F faster)
-st.LP hurtbox is smaller, making it easer to use as a poke
st.LP's hitbox
-Raging Slash's (UC2) startup is now 3F (1F faster), with a larger hitbox, and is completely invincible until the end of active frames, making it massively improved over the SSFIV version
Raging Slash's (UC2) hitbox
Next week is Zangief, Sagat, Dan, Dudley, Hakan, and Adon.