Visual Studio 2010 Beta 2 is now available for MSDN subscribers to download.  No worries if you are not a MSDN subscriber, the beta will be generally available on October 22 2009.

http://msdn.microsoft.com/en-us/vstudio/dd582936.aspx

And if you are looking specifically for SharePoint development, there are quite a number of resources available:

Walkthroughs

• Add Feature Event Receivers
• Create a Custom Field, Content Type, List Definition, and List Instance
• Create a Site Definition Project
• Import a SharePoint Designer Reusable Workflow into Visual Studio 2010
• Import Items from an Existing SharePoint Site
• Creating a Web Part for SharePoint
• Creating a Web Part for SharePoint by Using a Designer
• Create a Custom Site Workflow Activity
• Creating a Workflow with Association and Initiation Forms
• Creating and Debugging a SharePoint Workflow Solution
• Add an Application Page to a Workflow
• Creating an Application Page
• Creating an External List in SharePoint List by Using Business Data
• Deploying a Project Task List Definition

How To...

• Add and Remove Features to a Package by Using the Package Designer
• Add or Remove SharePoint Connections
• Create a BDC Model
• Create an Event Receiver
• Customize a SharePoint Feature