The first Community Technology Preview (CTP) of Visual Studio for Application was released in April 2006.
The second version of Visual Studio Tools for Applications includes features such as the Dynamic Programming Model and support for WPF, WCF, WF, LINQ, and .NET Framework 3.5.
[3] VSTA is included with Microsoft Office 2007 for use by end-users and business application developers, and the SDK is available separately for ISVs.
[6] Visual Studio Tools for Applications consists of both a runtime and design time environment or IDE.
Independent software vendors (ISVs) wishing to integrate VSTA into their applications must pay a license fee to Summit Software that is calculated either on a $50 per-seat basis or on the basis of a 1%, 2% or 3% royalty depending on the products' revenue.