Howdy,
From: http://msdn2.microsoft.com/en-us/vjsharp/default.aspx
Retirement of J# language and Java Language Conversion Assistant from future versions of Visual Studio
Since customers have told us that the existing J# feature set largely meets their needs and usage of J# is declining, Microsoft is retiring the Visual J# product and Java Language Conversion Assistant tool to better allocate resources for other customer requirements. The J# language and JLCA tool will not be available in future versions of Visual Studio. To preserve existing customer investments in J#, Microsoft will continue to support the J# and JLCA technology that shipped with Visual Studio 2005 through to 2015 as per our product life-cycle strategy
See also: http://www.ikvm.net/
dennis