As you know, this journey through Learning Silverlight is being written with two voices. The bold voice is the part of my brain that works for Microsoft,
while the lighter font is taking the role of the .NET developer learning Silverlight.
On the first day I noted that there was confusion about Silverlight 1.0 vs. 1.1; I'm happy to note that I missed (or perhaps it was recently added), the following at the top of Step 2 "Download the Tools" in Getting Started
For more information on the features in 1.0 and 1.1 see the features matrix.
The feature matrix is wonderful — it shows in detail the difference between what is currently available in the 1.0 RC version of Silverlight and what is currently available in the 1.1 Alpha version.
I've also received email from folks who have questioned whether this is one product or two. Let me clarify. This is one product: Silverlight, that is currently in version 1.0. At the same time that the development team is readying 1.0 for final release, they are working hard on the next release (1.1) which they have made available as an alpha (for early testing). The 1.1 release adds many cool new features, the most important of which is the addition of a subset of the CLR, and thus support for managed code and C#/VB9.
Finally, if you are interested, in detail, about the architectural differences between 1.0 and 1.1, there is a terrific image in the 1.1 help files (packaged with the 1.1 SDK) under Silverlight Architecture that illustrates the framework modules that are added in 1.1 and the impact they have on your programming options.
More to come…