Developers can get their hands on the first build of Windows 10 Technical Preview for phones. Microsoft has announced the first build is available for Windows Insiders.

“This is the earliest publicly available preview we’ve ever done for Windows on phones,” wrote Gabe Aul, engineering general manager at Microsoft, on the company’s blog.

“This preview is still very much under development, and you’re going to see some rough edges. We’re sharing it with you so you can be with us at every step, and provide your feedback to help make this the best release ever—because it’s the one made for you.”

According to Aul, developers may come across unfinished features, bugs and an unattractive UX, but the build will improve and developers can expect new features, stability, performance and UX enhancements as time goes on.

Apple adds groups to TestFlight
Apple has announced it is making it simpler for developers to manage external testers in TestFlight by adding groups. TestFlight is Apple’s beta testing service that enables developers to invite up to 1,000 beta testers to try out their iOS 8 apps before publishing them to the App Store. With groups, developers can send builds, instruct where testers should focus, and apply actions to several testers at once, according to Apple.

Apple tightens security for iMessage and FaceTime
Apple is making more efforts to protect its users’ confidential data.

According to The Guardian, Apple is adding an additional login step to protect iMessage and FaceTime users from hackers on Apple devices.

The two-step authentication will ask users to verify their accounts with a security code in addition to their usual login.