Currently at Mix 11 in Las Vegas, NV.  Microsoft holds different conferences throught the year and I would put Mix in one of their web conference bags.  Reality is can't go wrong with Vegas for the conference since there are a ton of things to do and the facilities are pretty nice.  Let's dive into the Mix 11 day 1 recap:

Day 1 seemed to be focused on IE9 / 10 and Web (ASP.NET MVC, Web Matrix, Open Source Orchard).  Dean Hachamovitch kicked it off with presentations and demos of IE9.  There were some side by side comparisons between Google Chrome and IE9.  The samples on IE9 outperformed Chrome and showed how hardware acceleration really has an impact on user experience - which is good news for those HTML5 developers looking to take advantage of transitions in the future.  He also demonstrated IE10 and released a location to get the initial bits to play with.  You can download the IE10 Platform Preview. 

Scott Guthrie came on and based his talks and set up speakers to demo on the core web ASP.NET stack (MVC3, Razor, Web Matrix, Orchard, and NuGet).  There was an inside joke about #winning and Tigerblood that was pretty funny but we need to leave Charlie alone :)  Scott announced Entity Framework 4.1 and mentioned it was now available online.  Go through the web platform installer to download the new bits.  The update contains HTML5 support inMVC3 projects, JQuery 1.5, and Modernizer.

Scott Hanselman conducted a demo (Begin to End) on building the backend administration site using VS 2010 and EF 4.1 and the front end  using WebMatrix and Template Monster to pull down the theme.  Drew Robbins conduscted a demo with Microsoft's open source project Orchard.  This was pretty cool and showed a different flavor for building a CMS site.

Looks like they are leaving the Silverlight talk for tomorrow.  I know Silverlight 5 will be released today with new features for 3D, etc...  Will post a follow-up this evening or tomorrow.  I thought they could have done a better job explaining where the following products live (e.g. Web Matrix, Orchard, Visual Studio Express, and Visual Studio Pro or Enterprise).  After the keynote, I spoke to a few developers that were talking about doing some heavy development with Web Matrix.  I don't beleive that is the right product for some of the things they were looking to do.  I can see why they were confused but overall Day 1 had some good stuff.

You can watch the keynote here. 

Hope this helps,

Carlos