My son's national championship D3 team had 6 pitchers throwing in the 90's. This was 2014/15.
When we went up to OU to play them in the fall for a scrimmage ou r top guys were sitting 90-92,one topping at 94.(signed by MLB team) OU pitchers were sitting 94-96 top 98. They were clearly a step up in quality and velo as you would expect.
The Trinity pitching coach was a leader in the advanced training and as @Wechson has pointed out velocity training is much more prevalent today. My son's former pitching coach recently said that if you give him an athletic pitcher he can have them in the 90's today.
When my son was in HS (2011) if a pitcher was hitting 90 there would be a ton of pro scouts in the stands and while I am not that close to HS ball anymore I think the threshold is much higher.