Google has released the first Developer Preview of Android 11. The list of features in this version provides a glimpse of what to expect when Android 11 becomes available to consumers later this year. Messaging receives the biggest update, with a new dedicated section of the notifications shade devoted to ongoing conversations. Messaging apps can also use "bubbles" to float a simple messaging thread window above other apps. System permission dialog boxes (for access to location, etc.) now have an "Only this time" option, similar to iOS. Android 11 also adds native support for secure storage and retrieval of verifiable identification documents, such as ISO 18013-5 compliant Mobile Driving Licenses. Call screening apps will now have standardized access to STIR-SHAKEN data, as well as a new screen that appears after each call, "to let users perform actions such as marking a call as spam or adding to contacts.". Also new are better support for pinhole displays, waterfall displays, animated HIEF image files, and low-latency video modes. Developers will benefit from new APIs for machine learning, as well as 5G network status and performance. Android 11 also advances Google's Project Mainline, moving additional components of the OS into modules that are quickly and easily updated via the Google Play Store, instead of requiring a manufacturer-supplied full OS update. The Developer Preview released today is not a "public beta" and is not intended for consumers; it will only run on certain Pixel devices and requires manual installation. Separately, Google announced that Android 11 will enhance Work Profile so that companies issuing company-owned phones to employees can give employees separate work and personal profiles on the same device. Companies still control the work profile and can set device-wide restrictions, but personal data is kept private from the employer. This feature was previously only available for personally-owned devices, not company-issued devices. Google is expected to reveal additional features of Android 11 at its developer conference in May.