The problem Imagine the following ContentType: public class PostPage : PageData { .... [Display(Order = 400)] [CultureSpecific] [AllowedTypes(typeof(AuthorBlock))] public virtual ContentReference Author { get; set; } ... } As you can see, it's only possible to select AuthorBlocks

New features Support for more built in properties The following properties are now supported out of the box: BlockData bool double ContentArea ContentReference DateTime IEnumerable<ContentReference> int LinkItemCollection PageReference PageType string[