A sign that we should be seeing OS 10.1 coming soon to our BlackBerry Z10 devices, the Gold BlackBerry 10.1 SDK has been released unto developers. This also means the Q10 is nearing as well, as we are told that the Q10 will be running OS 10.1 at launch. The 10.1 Gold SDK update is for Core Native SDK and Cascades. Simulators have been updated as well. You can get more details by reading the changelog.