Hi James,
As far as I know, the latest version is 5.0.1748, called Neasden. We looked into it and decided not to upgrade, which is a pitty as the new software provides some nice improvements. However, to our judgement, it is no longer possible to use the “Move Couch” functionality in a reasonable way (both for Truebeam and Clinac). So, if your RTTs are used to use Move Couch for patient positioning routinely, then you have to carefully evaluate what you will give away. If you are not using AlignRT routinely for patient setup, then upgrading to Neasden is probably a good choice. If you provide me your email address then I can provide some more information. (daniel.vetterli@radioonkologie.ch)
Best regards
Daniel