In case you weren't liking the leaked OS 10.3.0.1418, you now have the option of hopping into OS 10.3.1.821 on most BlackBerry 10 devices, unofficially. The files and autoloaders are now available for download for the Q5, Q10, Z3, Z10 as well as the Z30 in the CrackBerry Forums.
Full story from the Crackberry Blog...