At this time, the 17 inch license supports the 3880, 4890 and the 4900, the 24 inch supports the 7890 and 7900 and the 44 inch supports the 9890 and 9900. The "Home Edition" supports the R2880 and R3000. New printers including some of the Canon series will be offered soon.
On a separate note, please forgive me if I don't respond to questions regarding PrinTao on a regular basis as things are very busy as you can all imagine. Kevin and Mark will have some great information that should be helpful in answering many of those questions since we are all working together on this. Thank you for your patience and continued support.