Neowin®

While build 10572 brings a range of very welcome new features, it inevitably comes with a range of known issues too, including broken Visual Voicemail, and 'continual crashes' in the Phone app.

Microsoft's new Windows 10 Mobile Insider Preview brings a wide range of new features including integration of the new Skype experience, improvements to Cortana, Photos and storage settings, and more.

Microsoft says the bug preventing upgrades to new Windows 10 Mobile previews has been fixed in build 10575 - but it will first release 10572 today, promising new features and improved battery life.