A new March 29th 2007 beta is now available from the download page.

New stuff:

New "scaling rail" option for sweep. You can now pick an additional guide curve for sweeps by pushing the new "Pick scaling rail" button. The scaling rail gives the opportunity to further control the shaping of the profiles as they travel along the rail. For a 2 rail sweep the scaling rail should run down the center line of the sweep and basically acts as a 3rd rail. Each profile is stretched vertically so that it fits against the scaling rail. For a 1-rail sweep the scaling rail should run along one side of the central rail and allows you to add bumps or flared ends to a tube-like shape by using one additional guide curve instead of many different profiles which would have been previously required for such shapes.

New "preserve tangent" mode for 2-rail sweep. If you have all open planar profiles that share a common end tangent and are on parallel planes, there is a new "preserve tangent" checkbox that can be enabled which will perform the sweep with a different method that guarantees that all in-between profiles will continue to be on the same set of parallel planes and will maintain the end tangent for all created in-between profiles. This is useful when attempting to create a 2 rail sweep that you want to mirror later on without leaving a crease down the mirror line. The normal 2 rail sweep does not work well for this situation due to the rotations of the profiles as endpoints slide along the rails.

There is now a new closed option for loft.

Made a midpoint object snap available on arc curves.

Updated ellipse command, there are now width and height input boxes.

Update curve offset - planar curves will now always offset within their own plane. Also offset will now join together touching curve segments automatically, it is not necessary to join them manually. Together these changes allow for offseting the selected edges of a box to get a trimmed smaller or extended larger rectangle.

Fixed bug in reading .3dm files where block definitions were read as ordinary objects, making extra objects appear.

Updated Join and Separate so that the results are selected when the command finishes.

Blend, Loft, and Sweep can now be canceled if they are taking a long time to complete.

Update blend and loft - instead of being sensitive to the end which is picked for matching up open curve with one another, an automatic calculation is always done and you can now flip the direction of any section by clicking on the section (either the blend edge or the loft curve).

Updated Blend - added a slider for adjusting the bulge factor of the blend.

Update fillet - when using blend shapes for fillets, there is now a "Bulge" slider that you can use to tweak the shape.

Surface blending has been completely rewritten and generates much better results.

Various bug fixes...