Typically, Google releases a preview of the upcoming version of Android sometime in March. This year, it’s doing it earlier than ever with the release of the first developer preview of Android 11 for Pixel phones.
The emphasis this year is on the developer part of the developer preview, as it doesn’t seem as though there will be major UI or UX changes in this early iteration. (Those will likely come at the Google I/O conference in May.) Because it’s so developer-focused, you’ll need to manually flash a full system image onto your Pixel 2, 3, 3A, or 4 in order to test it out.
For the record, it’s called Android 11, though you’ll likely find references to “Android R” here and there. As for a dessert reference, you’re on your own. Whatever…