"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Google Deploys Full-Screen Compose Window for iPad-Formatted Gmail
Building on top of the existing two-column Gmail interface on the iPad, Google has announced the launch of a new full-screen compose window that will pop up over the Gmail window, making it easier for users to write email messages on the tablet device.
When you write an email you'll now get a big full screen compose window instead of splitting the screen between your inbox and the compose view. More text is visible at once and there are no more distractions with messages on the side. We've also fixed problems that prevented scrolling on long messages.Google does note, however, that the new feature is available only in the US English language format for the time being.
The company also reports that it is still experimenting with the iPad form factor, and is thus continuing to solicit feedback and suggestions from users.