这个消息来自：
http://www.qtsoftware.com/about/licensing

我看了下上面的链接，我想原因应该如这个FAQ所言：


      What does Nokia hope to accomplish with this new strategy?

Our aim is to:

    * To establish Qt as the de facto standard for rich UI and
      application development, ensuring that there is a vibrant
      ecosystem of application developers for Nokia devices and other
      platforms
    * Ensure that Qt is of the highest quality possible with good
      supporting tools and services such that Nokia is able to get
      devices to market faster, and with better software. The widespread
      use of Qt translates into greater richness and stability across
      and between platforms.
    * By spreading Qt usage as widely as possible and establishing a
      robust ecosystem, Nokia will gain access to true cross-platform
      APIs for developing applications and services once, and deploying
      them across desktops, devices and the web without rewriting the
      source code.


Qt以前很长一段时间都是GPL和商业版本并行发布的，因此，没有购买商业版本Qt 
的开发者基本
上不可能用Qt来开发商业软件（尤其是专有软件），这无疑是Qt和GTK+的一个重要 
区别。
现在，Qt终将使用LGPL发布。依靠Qt强大的稳定性、可移植性和易用性，相信 
Nokia上面那3个
目标能够很快得到实现。