BLACKBERRY RELEASED the Blackberry 10.3 software development kit (SDK) in beta on Wednesday, while teasing an upcoming BB10 4.5in smartphone with a 1440x1440 resolution display.
Blackberry said in a blog post, "Starting right now, you can download the Blackberry 10.3 SDK OS for your existing Blackberry 10 smartphone and the latest version of your favorite SDK so you can start testing your applications."
The Blackberry 10.3 SDK brings a user interface (UI) overhaul to the BB10 operating system, with the firm moving to a flatter, cleaner interface, clearly having taken tips from iOS 7.
In the SDK release announcement, Blackberry boasted of "precise and simplified UI decisions" and "balance between shapes and white space", meaning that app icons will look cleaner, while much of the texture found in BB10 will be removed.
While not mentioned in the release, it's also thought that Blackberry 10.3 will boost the performance of Android apps ported to the mobile operating system.
The Blackberry 10.3 SDK isn't all about design changes, though, as Blackberry took the developer release to tease an upcoming QWERTY smartphone that will feature a 4.5in display with 1440x1440 resolution and a pixel density of 453ppi.
Beyond that, Blackberry gave no further details about the device, saying, "I know, I know... you want more details on that new device, but we're not quite ready to give them yet, so hold tight and watch the blog for more information! In the meantime, testing with the 10.3 beta simulator will allow you to see how your application will behave in this new resolution and DPI combination, so we encourage you to check it out as soon as you can."
Blackberry also announced that we'll see another Blackberry Classic device this year running BB10.3.1. µ