While a few signs pointed towards the second release of the Windows 10 Technical Preview for phones by the end of March, we have confirmation that a new build is coming soon.
And it will come with support for more smartphones.

Microsoft provided an [Only registered and activated users can see links. ] last week, putting up a rather detailed list of handsets — almost all Lumia devices from Nokia and Microsoft are in line to receive the new preview operating system. Though curiously, some a few names are missing.

Most notably, the Lumia 930.

However, the preview build will support another flagship that Redmond launched not too long ago. The phablet flagship, the Lumia 1520. And that should please users of the device.

The premiere version of the Windows 10 for Pones Preview was only compatible with six smartphones, but Microsoft seems to have ironed out a lot of the compatibility issues — this next version will only be unavailable for a few handsets.
You can check out the full list at the link above.

Redmond did, however, confirm that they may pull a device from this list if they encountered bugs or issues during testing. Fingers crossed nothing like this happens.