We have that.
It's no problem to get a new license from our vendor, they're just not very good about telling us there is a new version to upgrade to.
No, there isn't... And there is a reason for it, since people often think they need to have the latest and greatest... There are sometimes implications beyond just upgrading or getting a new license key.
For example, do you have a CS platform or an HX platform? Do you know that the CS platform cannot be upgraded beyond 6.1 but the HX can? Do you know that some software versions require a certain size CF card be installed, and you can't just use an off the shelf card since your serial number is (likely) embedded in the card?
And those are only a few, not to mention things like integration to other servers (UC/Phone Manager, CCM, attendant consoles, and others) may need to be upgraded or reconfigured as well, and Mitel does not want customers performing actions that may comeback to bite them, or their authorized vendors, in the @ss later.