I discussed this with my cousin during Christmas. He's been there 2 year ago and again last year.
He said especially the more touristy places like Havana, Trinidad, Vinales,... are changing fast. Locals see lots of tourist coming and going and see that they can make easy money. For many of them, the tourist are walking ATM's. And especially with the Americans coming who have the habbit of giving big tips and don't complain when they get an excessieve restaurant bill.
He said they less touristy East still has the original Cuban vibe he liked during his first visit. The people are less greedy and more honest.