mazengh,
This depends on when you purchased Signa Station 4.0, it may or may not be. If you have a sw contract then it would be N/C. By the way, our sw contracts cover sw upgrades whether they are .1 or full versions. If you are located in the U.S., I could have someone contact you on this. If not, please contact your local Heidelberg rep.
Regards,
Mark