Microsoft has rescheduled the launch of its ambitious Visual Studio 2010 software development platform and the accompanying .Net Framework 4 programming platfom to April 12, after having scrapped a planned March 22 release date.

"Short but sweet, Visual Studio 2010 and .Net Framework 4 will launch on Monday, 12 April 2010," said Rob Caron, marketing communications manager for Developer and User Experience Runtimes and Tools at Microsoft, in a blog entry published without elaboration.

Issues with performance of the platform spotted by beta testers had prompted the company last month to postpone the initial March launch. Microsoft has said the launch date would be about the same approximate time when the package was available to developers at large.

Visual Studio 2010 has been positioned as a platform for building Microsoft SharePoint, Windows 7, and Windows Azure cloud applications. It also offers historical debugging and Silverlight rich Internet application development capabilities. The .Net Framework 4 programming platform features capabilities such as a reduction in size.