@MagerValp
I am sorry, there isnt a changelog.
You will need to test it. I recommend you use a graphics benchmark tool such as p96speed (included in the archive), test your current setup and save your results. Afterwards back up your picasso96 install and then apply this picasso96 update. Reboot and use p96speed. After that, compare both results, and dont forget to post them here.
Results should be favourable in this last test.
Another test you might do is to create the situation where you allways had graphic glitches and see how your new drivers works now.
Good luck!