As long as
your update maintenance is active, you may change to the latest version, and if you have a
perpetual license, use that version for an indefinite time. Practically all
information about your license, including the latest download instructions, can be retrieved from here.
License type comparison •
The cost of
upgrading your perpetual license with longer update
maintenance or to a higher license type and the cost of renewing your
temporary license are highly individual and depend on various factors, most
importantly on the previous and the new maintenance/license expiration date
and on past and future license price development.