Enhanced User Experience
Microsoft Visual Studio 2010 delivers a modern,
enhanced user experience that makes understanding the current context more
natural.
Clear UI Organization
Reduced clutter and complexity
Improved editor
Better support for floating documents and windows
Enhanced document targeting
Focused animations for action feedback
SharePoint Development in Visual Studio 2010
Usability and functionality
for SharePoint developers is much more advanced with this Visual Studio release.

Enhanced customization abilities with new templates, designers and
explorers
Design your own association and initiation forms for workflows
F5 deployment and debugging for SharePoint apps
Easier SharePoint site
navigation with Server Explorer