Looks awesome! :) Finally there are some information about SharePoint 2010.
The is a Sneak Peek available from Microsoft containing an overview, a video containing information for IT Professionals and a video containing information for developers.
All pictures from below are taken of this video as well as some key information I remember.

Overview
The old donut has gone… and there is a new one which looks like this:
- Sites
- Communities
- Content
- Search
- Insights
- Composites
So enough for the theoretical stuff!
And this is how SharePoint 2010 looks like:

Here are some things I remember from the video giving an overview:
- Ribbon interface
- Asynchronies (no post back when checkout)
- Edit on website with live preview
- PowerPoint themes can be used for sites and themes can be applied to all sites
- Visio rendered in browser with LOB data
- Business connectivity services is enhanced version of BDC (Seamless connectivity between SharePoint and LOB systems and Office)
IT Professionals
The video for IT professionals has the following information (and many more):

- Large list management
- Best practice analyzer
- Enhanced logging and extensible infrastructure
- Enhanced backup and recovery
- Upgrade SharePoint 2007 database while attaching content database to web application and upgrade user interface or keep old one
Developer
The video for developers has the following information (and many more):

- Visual Studio 2010 SharePoint tools with visual WebPart designer
- LINQ for SharePoint to easily access list data
- Silverlight WebPart allows to include Silverlight applications in the page
- Import .wsp files into Visual Studio 2010
- Developer dashboard
- Client object model
Looks promising but as everyone knows these are just some of the things the final version will contain. And as everyone knows this looks promising but everyone has to check out by themselves. ;)