BlackBerry has officially pushed out a new developer OS designed to test apps out ahead of the official roll out of 10.3 this summer. The downloads are available for the Z10, Z30, Z3, Q10, and Q5.

If you’re a developer, and want to give this new version a run, hit the links below to download.

If you are NOT a developer, you may not want to download this OS for a couple of reasons. Developer OS are not full operating systems are they are designed to be used to test apps, and not to be used as daily drivers. We strongly advise against loading this OS should you just want to try it out to see what’s new.

The good thing is these links are official from BlackBerry, and they are not password protected.