This package contains a Visual Studio editor extension that checks the spelling of comments, strings, and plain text as you type, interactively with a tool window, or for an entire solution, project, or selected items with a tool window. Extra options are available to control how elements and attributes in XML and MAML files are spell checked and various other options. A code analyzer is available that spell checks identifiers in C# source code.
See the release notes for details on all of the changes made.