The Sharepoint Development team has just (like the IE Development team) created their own blog.
"SharePoint Team Blog - A blog from the SharePoint Development Team
We thought it’d be a good idea to create a broad SharePoint blog, where we can talk about topics across the SharePoint family, details on the next versions we will release later this year with Office 12 and Windows Server, insights into our decisions/process, and what we are learning from seeing customers and partners use SharePoint to help them be more effective. That’s the purpose of this blog."
The blog can be found at: http://blogs.msdn.com/sharepoint/