my suspicion is very few existing (hardware) products will be upgraded to support any of midi 2.0.
for ‘legacy hardware’ , the position has always been midi 2.0 is backwards compatible, so you can carry on the way you always have.
( cue arguments, about when customers can ‘expect’ new functionality to old products 
)
I think, mainly, it’ll be used for the ‘next generation’, this is why we are caught in a bit of a chicken n’ egg situation for adoption - its hard to sell a midi 2.0 device, when theres not much around to make use of it - hence the push to get software vendors (e.g. daws) onboard asap…
if we are lucky, there might be a few interesting ‘bridging’ products e.g. a way to store midi-ci data for older synths, so you’ll be able to integrate them easier using 2.0 features.
simple things, like a daw ‘knowing’ CC x = filter cutoff and is 7bit.
perhaps I should be more optimistic (and I am generally optimistic about midi 2.0) , but I see this being quite a slow road to adoption… its taken years to agree the standard, and we have seen hardly any products to actually implement it so far.