Insert a small screwdriver between the wiperarm and the ridged piece. Pry the ridged piece up. With the arm away from the windshield tap on the end of the blade. This should release the wiper from the "J" hook on the end of the arm.
i managed to figure this out. there is a little upward arrow on the left hand side of the ridge part that indicates that it is to be pulled up and to the right. it's like a little cover that you can open. from there you can remove it with the old turn the wiper perpendicular to the blade arm and shove it down method. -_-, why do wiper manufacturers have to make so many different ways of attaching these darn things
We Honda owners have bayonet mount arms. the blades are removed via (usually) squeezing a clip near the pivot and pulling back towards the arm. in many cases you have to rotate the blade assy. to fully remove it. The end of the arm is a hook, and this is why pulling back is needed. the clip that you squeeze might be hard to see but a good rule of thumb here is to look at the new blade replacement to see where the slip is located on it and compare to the one on the car.
Those blades look like you should rotate the blade so it forms a “T” with the arm, then push the blade down onto the arm and it should slide off - there may be a small clip inside the hook part of the arm which you should see if you look, which needs to be released.
If all else fails then cut the blade but don’t damage the arm...