I notice that they didn't announce any substantive changes to the actual mobile app. So, it appears that rather than addressing long-standing complaints about the app that lead people to use 3rd party apps like Apollo (that Reddit killed off with absurdly high API pricing) they decided to invest in customized and proprietary fonts and logo updates.
It appears that the app will still have all the same bugs, problems, and usability issues. But the text, logo, and color scheme will be awesome.