Hello everyone!
Earlier today, Fandom released a minor design update to the VisualEditor, both the Visual Mode and the Source Mode (aka 2017 editor), to help simplify it and make it more intuitive. I recommend reading this blog for detailed information, but here are the short details.
Renamed some of the tools (e.g. "paragraph" is now "normal text")
Shuffled some icons around (e.g. the back and forward arrow buttons are now located on the far left rather than the middle)
Hid some less-essential tools from view to make the initial editor view less overwhelming in all its glory (the tools are still accessible in dropdown menus)
For the 2017 source mode: we removed the options available from the menu icon (those three stacked horizontal bars) -- If you want those back, you can customize your toolbar to access them from there)
For the 2017 source mode: we used the menu icon to replace the gear icon
The blog has some helpful pictures as well. And a reminder that you can switch your preferred editor in Special:Preferences ^^ Let me know if you have any comments, concerns, or constructive feedback! Happy editing! :D