Hi Michael,
If you want to buy the older version, I have some in stock. There is nothing wrong with the older version, it works great and has been tested by many people with no major issues that we know of.
The prototype for the new version is finished, but I must do more testing to verify that everything works. When that is done I will contact you with a price. The new version will be a bit more expensive than the previous one because of the parts required.