"Tjark Nikolai" ha scritto nel messaggio
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That is only partially correct. The upgrade from 8.1x or 8.0x to 8.2x and
later does cost some money. That is due to the introduction of the "new"
global scenery, which comes on several DVDs.

No, that is not correct. Even without Global Scenery, upgrades to newer
versions are still available (for example, I don't have Global Scenery, but
I have upgraded from 8.00 to 8.30). The confusion arised from the fact that
the version 8.21 was just version 8.20 modified to work with Global Scenery.
Later versions (8.30 and versions yet-to-come) will work both with or
without Global Scenery.

Marco