What is Oslo all about? According to Microsoft's Burley Kawasaki at Architect Insight, Oslo is a new way to build connected applications where services are extended from client to cloud and models become the mainstream part of development. Oslo is not a product but a way of working. http://www.microsoft.com/soa/products/oslo.aspx.
Other things of interest from Architect Insight include the ConfigWeb sample (from Stock Trader) for configuring enterprise web applications (http://msdn.microsoft.com/en-us/netframework/bb499684.aspx). The Internet Service bus and biztalk services (http://biztalk.net/Default.aspx).