There is no way to forecast that. Premiere Elements features upgrades occur annually. There is a "beta" program where you can volunteer to help 'test' your version of a GPU.
For whatever it might be worth, I put my name into the beta program. After several weeks I got a response and my GPU was added. Some things are a little quicker. But, unless you are doing lengthy videos with a lot of tracks, adjustments and effects, you might not notice a lot of improvement.
Go to this page and scroll down to find the place to request that you be added to the Beta program... IF you are added you will be sent a small program to run, you may need to run that program 2-or-3 times to add your card... at least that is what happened for the card in my previous build