Silverlight 5 WinRT

  public sealed class AssemblyTargetedPatchBandAttribute
  : Attribute, _Attribute
  public String TargetedPatchBand { get; }

  public sealed enum GCLatencyMode
  : IComparable, IFormattable, IConvertible
  { Batch, Interactive, LowLatency }

  public abstract sealed class GCSettings
 
  static public Boolean IsServerGC { get; }
  static public GCLatencyMode LatencyMode { get; set; }

  public sealed class MemoryFailPoint
  : CriticalFinalizerObject, IDisposable
  public virtual void Dispose();
  protected virtual void Finalize();

  public abstract sealed class ProfileOptimization
 
  static public void SetProfileRoot(String directoryPath);
  static public void StartProfile(String profile);

  public sealed class TargetedPatchingOptOutAttribute
  : Attribute, _Attribute
  public String Reason { get; }