The Lencomotion headshell has been in development now for the last couple of years and, although a prototype exists, the final design is still evolving.
The original idea was to produce a heavy headshell for the rare Lenco P77 tonearm. The original headshell for P77 is heavy and this extra weight over the standard headshell helps to balance the arm correctly. However, as there has been demand for a replacement standard headshell as well the design process has been expanded to include 2 variants; the P77 version, and a lighter version for the stock tonearm.
These replacement headshells will have the advantage of standard cartridge mounting slots to allow the use of a wider range of cartridges, and to make alignment much easier.
There should be some new prototypes available to test in the near future.