Version 2.3 of MvcDiagram adds the following new features:

Zoom control
The ZoomControl class lets users change interactively the current zoom level and scroll position of a Diagram. To set it up, create a ZoomControl instance, set the control's TargetId property to the id of a DiagramView, and call the Html.ZoomControl extension method to render it:

ZoomControl zoomWidget = ZoomControl.FromRequest("zoomWidget", Request);
zoomWidget.TargetId = "diagram";
ViewBag.ZoomControl = zoomWidget;

@Html.ZoomControl((ZoomControl)ViewBag.ZoomControl) 

Set the ZoomStep and ScrollStep properties to specify the amount added to diagram's zoom level or scroll position by ZoomControl's buttons. You can customize the control's appearance by setting properties such as Fill, BorderColor, CornerRadius and TickPosition.



Shadow styles
The Diagram.ShadowsStyle property and ShadowsStyle enumeration let you switch shadow rendering order between rendering all shadows in a single background layer (OneLevel) and drawing each shadow close to its node, possibly overlapping other nodes (ZOrder). ShadowsStyle.None lets you disable shadows altogether.

Miscellaneous
~ Set the LinkLabel.Brush property to fill the background of link labels.
~ Number of link segments can now be set from client-side scripts by calling the DiagramLink.setSegmentCount method.
~ VisioExporter export speed has been improved greatly for large diagrams.
~ The BackgroundImageAlign property specifies the alignment of diagram's BackgroundImage.
~ The TextPadding property specifies the padding distance between the borders of a node and its text.
~ Nodes of all classes can be rotated.
~ Fixed a bug where the Alpha value of colors was lost after post-back.

If anyone is interested in trying the beta version, please download this archive containing the updated assemblies and script files:
https://mindfusion.eu/_beta/MvcDiagram.2.3.zip

Any comments, questions and general feedback are welcome.