Android Q Beta 2 update

A few weeks ago Google Introduced Android Q Beta, a first look at the next version of Android. Along with new privacy features for users, Android Q adds new capabilities for developers - like enhancements for foldables, new APIs for connectivity, new media codecs and camera capabilities, NNAPI extensions, Vulkan 1.1 graphics, and more.
For more details
https://android-developers.googleblog.com/2019/04/android-q-beta-2-update.html?m=1

Android Q Scoped Storage: Best Practices and Updates

Application Sandboxing is a core part of Android’s design, isolating apps from each other. In Android Q, taking the same fundamental principle from Application Sandboxing, we introduced Scoped Storage.

Since the Beta 1 release, you’ve given us a lot of valuable feedback on these changes -- thank you for helping shape Android! Because of your feedback, we've evolved the feature during the course of Android Q Beta. In this post, we'll share options for declaring your app’s support for Scoped Storage on Android Q devices, and best practices for questions we've heard from the community.
To know more
https://android-developers.googleblog.com/2019/04/android-q-scoped-storage-best-practices.html?m=1

Android Version Timeline

Android 1.5, Cupcake: April 27, 2009
Android 1.6, Donut: September 15, 2009
Android 2.0-2.1, Eclair: October 26, 2009 (initial release)
Android 2.2-2.2.3, Froyo: May 20, 2010 (initial release)
Android 2.3-2.3.7, Gingerbread: December 6, 2010 (initial release)
Android 3.0-3.2.6, Honeycomb: February 22, 2011 (initial release)
Android 4.0-4.0.4, Ice Cream Sandwich: October 18, 2011 (initial release)
Android 4.1-4.3.1, Jelly Bean: July 9, 2012 (initial release)
Android 4.4-4.4.4, KitKat: October 31, 2013 (initial release)
Android 5.0-5.1.1, Lollipop: November 12, 2014 (initial release)
Android 6.0-6.0.1, Marshmallow: October 5, 2015 (initial release)
Android 7.0-7.1.2, Nougat: August 22, 2016 (initial release)
Android 8.0-8.1, Oreo: August 21, 2017 (initial release)
Android 9.0, Pie: August 6, 2018