Not all that much has changed. SSL Pulse[1] shows that use of OCSP Stapling went up about 3% in the past 12 months, currently putting it at 25% of observed sites. OCSP Must-Staple is now available in Firefox and can be added as an extension to certificates issued by Let's Encrypt. No other browsers have plans for Must-Staple AFAIK. Otherwise, OCSP is still soft-fail for everything but EV in most scenarios.
+3%? Well, that's less inspiring news than I'd hoped. Still, it's something, I suppose.
Anyway, that's another very interesting link you've got there - I knew about SSL Labs, but hadn't come across that report before. Looks like something worth keeping an eye on. Cheers!
The problem is that the major web server apache has basically a broken ocsp stapling implementation. It does a bunch of unexpected things and you'll likely not want to enforce stapling with it.
I note it's a year old, though - has much changed since then? OCSP stapling sounds like a Very Good Idea, I hope it's been catching on.