The newest beta version you will easily spot by using Bureau Blue SL theme. Beside this minor tweak, there are other features in this release.
The first one is adding PageWidth and PageHeight properties to a page. These properties are used to measure / dimension the size of the dialog if the page is called as a device dialog page.
The second property that we added to the page is PageBackground. The PageBackground can be either a solid color, gradient or linear brush or image brush (not yet ironed out that one!). This gives more rich user experience and better presentation of the projects.
Finally the runtime has been updated (on the web site only!) to color code all wires and paths. The paths are now color-coded and we plan to add click-to-highlight-the-path functionality.