I've attended
Australian Remix10 and below is a list the points, that I've learned and/or want to read more about.
The materials of US MIX10 conference are here http://live.visitmix.com/
Windows Azure (
pronounced [azh-er] http://dictionary.reference.com/browse/Azure) - sounds great from hosting costs/redundancy, but how much work is required to change existing asp.net application with SQL backend to support Azure.
Open Data Protocol (OData) - OData Q&A
Pivot | Features | Microsoft Silverlight Silverlight Pivot control
Web Deployment Packages
Web.config transformations,e.g. Web.Debug.Config- short description in the blog Common Web.Config transformations with Visual Studio 2010
Show sequenceDiagram
ASP.NET Ajax Library