Android 11 or Android R (As rumored because Google follows the trend of naming versions in sequence, and R comes after Q) is expected to release in the first week of May 2020 during the I/O event.

The top features of Android 11 include 

Display Cutout API, 

Scoped Storage, Bubbles APIs, 

Biometric Authentication Strength, 

Neural Networks API 1.3, 

and testing tools.  

P.S: 

Top 8 Android Q Name Suggestions Google Might Adopt

Quesito (ke-see-toe)

Quiche

Queijadas

Quarabiya (Kurabiye)

Queen of Puddings

Quince

Quindim

Qottab (Ghottab)

Android 11's most interesting features:

1. Scheduled dark theme.

Android 11 is reported to now have the ability to schedule when your device shifts to dark mode. You can either set a custom time or have Android shift between dark and light mode based on sunrise/sunset times in your time zone.

2. Chat Head bubbles are back.

With Android 11, the bubbles feature will make its way to mass rollout. Google has informed developers to start using the bubbles API, so once Android 11 ships, apps should be making use of the tool.

3. One-time permission.

Users will be able to grant an app permission to use location access once. There's no indication if this permission request will happen every time you open the app, or if it's a one-and-done option, which means you would have to re-install the app to give it location access.

4. Screen recording

This screen recording feature briefly appeared in one of the Android 10 builds, but quickly disappeared--there's no way to know if it'll pull off the same vanishing act by the time Android 11 rolls out. Hopefully, this time the developers will leave the feature in, so users can take video screen grabs of their devices to share with others.

5. Motion Sense gesture

This feature will only be on the Pixel line of devices, at least in the beginning. The feature allows you to pause/play with a Motion Sense gesture. So while listening to music, you could gesture with your device to pause or play the current tune. This will be handy if you constantly need to pause your music to converse with an actual human.

6. Share Menu pinning

With Android 11, you'll finally be able to pin apps and shortcuts to the Share Menu. This feature briefly appeared in the Android 10 build cycle but never made it to final release. Hopefully, this time around the feature will remain.

7. Airdrop-style file sharing

One of the most highly anticipated features to come to Android in some time is a take on iOS's Airdrop, called Fast Share (or possibly Nearby Sharing). This new addition was confirmed in the Android 11 Developers release notes and also indicates some of the issues the developers are currently having with the feature. When it is fixed, Fast Share will make it incredibly easy to share files between Android devices. 

8. New APIs

There are two important API additions coming to Android 11. The first is the 5G state API, which will make it possible for Android to see if a user is currently on a 5G network. 

Another new API is focused on foldable devices. With this, the API can read data from a hinge-angle sensor such that apps will be able to adapt to the angle of the device hinge.

Other APIs include those for screening robocalls and variable refresh rates.  

9. Resume On Boot

There's one more new feature coming to the Android 11 second developer preview, which is called Resume On Boot. With this addition, any time an Android 11 device reboots after an overnight OTA update, it will be able to immediately access Credential Encrypted storage so it can start receiving messages right away. 

https://www.techrepublic.com/article/android-11-the-six-best-features/