Microsoft has announced the technical Preview for the SharePoint 2010.It is a limited invitation only. But we can have a Sneak Peek of what will be available in the SharePoint 2010.
Watch the videos in the site, to give you some velocity here is the pictures and highlights from the sneak peek.

- New Ribbon based UI
- Support for Silverlight Web parts
- Rich Theming (Allows you to change the Skin of the SharePoint site to similar to the Office Client)
- Revamped Central Admin Design.
- Visual Upgrade (Option to upgrade the 2007 site to 2010 without any UI changes) to change the UI to 2010 it’s a flip of the Switch.
- Cool tools included in the Visual Studio 2010.(Visual Webpart designer, BCS Designer, Complete integrated option for developing Solutions)
- LINQ Support.(Implementation of LINQ in SharePoint)
- Developer Dashboard ( new dashboard for the developer that will help to view the Page loads, SP Request for the page, Web Part events stack etc)
- Business Connectivity Services (Yes BDC has been renamed and now it supports Read & write as well)
- External List (This is similar to List but the data are fetched from BCS)
- Client Object Model (You have Client API to access the SharePoint list using Javascript)
Some more information in the Links from Reza and Info about the Office 2010 Products
