With the Synchron series, VSL have changed their game. The original VI series was released starting from year 2002. Boulez and Stockhausen where in their mid 70s – aged, but still alive and kicking. Bernard Haitink and Claudio Abbado were leading their orchestras. Jerry Goldsmith was composing the fifth Star Trek movie, while John Williams was still working on the first Harry Potter. The best orchestral libraries we had, at the time, were the ones from Peter Siedlaczek and Miroslav Vitous, and VSL was the glorification of the ending century's orchestral sound.
Twenty years after, many things have changed in orchestral music. The panorama of orchestral film music has been greatly simplified, with a move toward atmospheric music, influenced by electronic rock, moving away from the old melodic, classical-inspired one. Modern classical music has become either more radical (and reserved to an even more niche audience) or extremely simplified, with the extremely popular 'neo-romantic' composers. The audience mixup has changed, with wider access to Western orchestral music to younger listeners coming from different cultures. Classical music performing has become a bit more 'pop', less nuanced, more shiny and spectacular, more immediately communicative. What it has gained is that orchestral music is now more a universal lingua franca, than the expression of a specific culture.
VSL started a series that is more in line with the modern times. Remaking their collection is a huge undertaking, that will take years, if not a full decade. But they found a way to ferry the old libraries to the sound of nowadays. They made the old samples match the shiny sound of the new libraries. Attacks were made more 'nervous'. Softer versions were added for more atmospheric pieces. A set of high-quality digital effects allowed modern sound-shaping and refining. The instruments were placed in a huge space, to go from classical intimate to modern cinematic.
You can turn convolution and artificial reverb off, but I still feel that the new libraries sound different. Yes, they are still them. But it is a bit like looking at Luke Skywalker in The Mandalorian, versus him in A New Hope.
Paolo