You used to be able to tap on the word "Artboard 1" above your board while inside the file and then go to Properties to change the artboard dimensions. That doesn't seem to be possible after the latest update.
How do you change the dimensions of the artboard now?
Copy link to clipboard
Nevermind! Just figured it out. A new button was added above the image insert option that gives you artboard dimension presets. You can also open the properties with this buttons selected, and you can custom size the artboard.