As I already wrote, Creo b5 will be a very big under the hood update, that means that the foundation, the language and the functionalities will be much more stables and powerful. In b5 we are investing much of our time in non UI related changes. UI and UX changes will be applied to b6.
An exception to this statement was the SplitView work we did a couple of weeks ago and the new HTML/Markdown functionalities we added to text based controls like Label, TextField and TextView. With this functionality you can literally write a Markdown editor for iPhone/iPad without a single line of code.
Let me show you how powerful this new feature is: