i'm convinced any gigastudio2.0-file will be readable by GS3, even if it might come with a new fileformat, so your instruments will keep all their functionality.
currently the exs-releases cost a lot of work and time (filenames, mapping-issues, other type of database, ect) so sidegrading cannot be for free.
if that changes in future versions or further platforms at least some administrative costs have to be covered, but currently this is neither decided nor calculated.
anyway, VIP is not meant as a slogan, but as what it is: the vienna innovation program to secure your investment in the library and offer upgrades without the need to pay twice for something.
christian