A new v4 beta (version Oct-17-2018) is now available for download here: http://moi3d.com/beta.htm , also linked to from the download page on the main web site.

The main focus for this beta is a polygon sub-d surface to NURBS conversion method, available on the side pane under SubD > Create > From file. This allows you to open an .obj file that contains a sub-d polygon cage and have it converted to a high quality NURBS object in MoI.

Some other stuff:

Settings for page size are now available in PDF/AI exports.

Fixed crash bug when modifying display mesh angle.

Updated STEP export to fix problem with object names not coming through to SolidWorks, Fusion360 and KeyShot.

Added moi.ini option to set current file name with foreign file types. In moi.ini under [Settings] SetNameWhenOpeningAllFileTypes=y When set, the current file name is set for all file opens not just .3dm files. Requested by Alex on the forum here: http://moi3d.com/forum/index.php?webtag=MOI&msg=9044.41

Updated DXF export to allow the dialog to be suppressed and options set by script. Parameters that can be set are:
// DXF export function parameter options:
//
// NoUI=true
// ExportType=2d | 3d
// ProjectionView=top | 3d | front | right
// WriteCurvesAs=splines | cubicsplines | polylines
// PolylineAngleDegrees=10.0
// UseSimpleEntities=true
// NumDecimalPlaces=12
//
// GenerateHiddenLines=false
// HiddenLineLayerMode=fromstyle | custom
// HiddenLineLayerName=Hidden lines (layer name to use when layer mode = custom)
// IgnoreTangentEdges=false
// Resolution=25.0

Thanks, - Michael