I did an in-place upgrade from Fedora 25 to Fedora 26. I didn’t expect much as I originally upgraded from Fedora 24 to version 25. What I noticed however was the performance. Programs and windows seem to open much faster, smoother. The apparent optimizations in this version of Fedora is quite stunning. Obviously, the people who worked on this version went quite far to optimize the overall performance. Overall, this is a fast and highly stable build of Fedora.