User blog comment:FishTank/Refining Your Editing Experiences/@comment-33378348-20200423194947/@comment-1038387-20200424195651

All wikis will be moved to UCP. It's an upgrade. Like going from Windows 7 held together by duct tape to Windows 10. Sure, 7 might have worked for you, it didn't lack things you needed and you knew where all the buttons were, but this is a wholesale improvement. Yes, it doesn't have everything yet and the buttons are different. It's a free trial version of 10 Home, but it'll become Windows 10 Pro eventually.