Hi Mike, the main new tools for the next v4 beta are annotations like dimensions.
A few screenshots of some earlier stages here:

http://moi3d.com/forum/index.php?webtag=MOI&msg=9363.107
http://moi3d.com/forum/index.php?webtag=MOI&msg=9363.108
http://moi3d.com/forum/index.php?webtag=MOI&msg=9363.95
http://moi3d.com/forum/index.php?webtag=MOI&msg=9363.100

There will also be a new "Detailed object properties" dialog which will have stuff like getting the length of a curve and the surface area or volume of a solid.

For previous V4 betas there is a collection of all the release notes at http://moi3d.com/wiki/V4Beta

- Michael

Here is what the new detailed object properties dialog looks like at the moment:



Next up is putting all the annotation properties on there.

- Michael

Hi Michael.

...did you forget to mention the "SubDiv" tool?

Hi Marco, the SubD to NURBS converter is in one of the previous V4 beta releases and so is mentioned in that link above: http://moi3d.com/wiki/V4Beta

Thanks,
- Michael

Got it :)
Thanks for the info.

Seeing Michael's effort and dedication on this I do not regret a single cent for purchasing MoI.

90% of the new features are super useful to me.
Thanks Michael.
Please keep up the good work.