Microsoft has released the Windows 10 Mobile Insider Preview Build 10586.36 to members of the Windows Insider program on both the Fast and Slow rings.

In a blog post announcing the release of the build, Microsoft's Gabriel Aul stated:

"This build continues to address feedback we've received from Windows Insiders as well as customers using our brand new Windows 10 phones like the Lumia 950 and Lumia 950 XL. As with the previous release, this Cumulative Update continues to use the minor version for differentiating between each version – so this build will appear as 10586.36."

"Windows Insiders have provided great feedback on the upgrade experience from Windows Phone 8.1. We continue to use the feedback we get from Windows Insiders to improve the upgrade experience and this update has some improvements to that experience."

Source: Microsoft