Microsoft will open Silverlight sources

24 hours after Adobe’s announcement of the opening of Flex’s source code, a symmetrical response from Microsoft followed. According to reliable information, she is also going to announce the publication of some fragments of the Silverlight technology under an open license. This will happen simultaneously with the Silverlight presentation in a couple of days.

As you know, the release of the Silverlight platform, which is called the "killer" of Flash , is scheduled for April 30 (beta). The momentous event will take place at the MIX 07 conference.

It is not yet clear which fragments of Silverlight are planned to be published under an open source license.

At the same time, there were rumors that Microsoft was preparing another blow to Flash, namely, the release two months ahead of the time of the development tools for interactive websites Microsoft Expression (similar to Creative Suite 3). Expression is scheduled for release at the end of June, but may be right now.
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The battle for the minds and hearts of web developers is heating up with a new force. The multi-year handicap that Adobe received can be exhausted very quickly. "Microsoft's programmers who own .NET will come to Silverlight, and programmers are reluctant to flash for several reasons," says entze , and many agree with him.

via Infoworld