Kind of. What I think they did was rotate the blocker board on the hand and flatten the bottom. They pulled the bottom edge of the board down closer to the fingers and pushed the top out a little more. The best way of illustrating it would be to look at the angle of the bottom edge of the board in relation to the thumb in your pics. On the G4, you can see how the bottom curves away from the thumb (as does the CCM). The G5 has a much more narrow angle there. The logos on the finger portion of the sideboard show it pretty well. They're both parallel to the face angle of the bottom of the board. Look at the difference in relation to the thumb graphic in both pics. Then if you look at the angle of the back of the sideboard at the wrist, you can see how much more square the G5 is. When they pull and straighten the bottom, it makes it longer in relation to the fingers, so it moves the board down in a way. Remember, the hand position in the Ritual line is adjustable anyway. I just threw the pics into the markup tool on my iPhone, which has a ruler that gives angles. If you line the board up to 90*, the thumb on the G5 is at a 61* angle to the board, vs a 51* angle on the G4.
I think they actually did leave it the same, and stuck it out further giving it more coverage. To me, the curve at the top of the G5 looks like it sticks out futher than the G4.
Given it's pretty rough, I just measured the top angle on each pic in relation to the board, using markup on my iPhone. If you make the thumb angle the same, the top angle is the same on both. That means they flattened it down on the G5 given the hand position in relation to the board has changed by about 10*. The angle of the bend to the face of the board is 58* on the G4 and 70* on the G5.