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Yes, #400 ^^^
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First, let's be clear. @tridacna noted that you can't SEE the update without removing the wing. Don't be distracted by that. You don't need to SEE it to know if it's there. As tridacna also noted, if you just pull gently on the wing on one side, if it does not have the update, it will pull away from the back plate and the opposite side of the wing will be pulled towards the back plate. If it DOES have the update, when you pull on one side, the other side will not move.
Second, I think any wing - even a wing on a Back Plate and Wing rig, will let you create problems for yourself if you don't demonstrate some basic competency with using it. When you are in horizontal trim, the air cell on ANY BCD is going to float up at the sides and duck down under the tank at the front/top and rear/bottom.
That means that air cannot move freely from one side to the other. When you are horizontal, air is not going to shift from one side of the wing to the other by running down to pass under the tank. Air in your BCD is always going to go to the highest point.
So, if you do a barrel roll, or just roll to one side and back, or put air in your BCD while you are rolled slightly to one side or the other, you can end up with more air in one side of your BCD than the other. It's not going to balance out until and unless you do something like go vertical, to get it all to the top of the wing and let it balance itself from side to side.
Just saying: Methinks you guys are putting too much air in the bladder.