I had a little time while traveling to South Africa so I thought I'd update my Silverlight FlickR demo to Beta2. 

Download the full solution read the full writeup

(note: in the application, you can click on the image to advance to the next one)

Overall, the changes were pretty minor, the most  interesting one was a change in the way Isolated Storage is accessed.  

I set up a page level variable called appsettings:

IsolatedStorageSettings appSettings = IsolatedStorageSettings.ApplicationSettings;

Then, when the page is loaded, I initialized based on it.

public Page() {
    InitializeComponent();
    if (appSettings.Contains("searchTerm"))
    {
        this.searchTermTextBox.Text = (string)appSettings["searchTerm"];
      
    }
    if (appSettings.Contains("imageNumber"))
    {
        ImageNumber = (int)appSettings["imageNumber"];
    }
}

Then, at the right time in the application flow, I save data to it

private void searchResultsImage_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
 {
     if (Photos == null) return;
     if (ImageNumber >= Photos.Count()) ImageNumber = 0;

     FlickRPhoto p = Photos.Skip(ImageNumber).First();
     this.searchResultsImage.Source = new BitmapImage(new Uri (p.ImageUrl));

     appSettings["imageNumber"] = ImageNumber;
     appSettings.Save();

     ImageNumber++;

 }

Notice, I also use Corrina's updated "Flat" style for SL beta2 as well, while the style structure changed a lot to take advantage of the new Visual State Manager, the changes to my code were minimal.