Wait for Potential Magic Keyboard Support
If you plan on using your next iPad to get work done, or if you just prefer using a keyboard with your iPad, you might want to wait.
The leaker doesn't call out the iPad Air 4 by name, but given that rumors point to an iPad Pro-like experience, there's a chance support comes to the iPad Air line.
As of right now, the Magic Keyboard only supports the 2020 iPad Pro models. It also features backwards compatibility with the 2018 iPad Pros, the 3rd-generation iPad Pro 12.9-inch, and the 1st-gen iPad Pro 11-inch.