Well this is kind of big. Nokia has announced plans to focus on Qt as its primary application development framework on all devices. That covers phones running Symbian^3, Symbian^4 and MeeGo. In other words, if you have a Symbian^3 device, you won’t necessarily need to upgrade to a newer operating system to run new apps, because they should support all three operating systems.
Nokia says the move means that the company won’t even “be talking about Symbian^3 or Symbian^4 at all” anymore, since all future developments will be available for all devices. That includes changes to the user interface, not just apps. And because, you know, the first rule of Symbian club is… nevermind.
Nokia is also building support for HTML5 content and web apps through the web browser and the Qt environment.