Some are luckier than others... I suspect one of our major clients (one of the country's largest banks) will be stuck using IE8 and nothing but for the next few years at least. They only moved off IE6 recently due to it falling out of support next April, so there is a chance they'll stick with IE8 until 2019 (the year before it and Windows 7 drop out of extended support).
At least our other major clients (smaller financial institutions) have started to see sense. While they are stuck on IE8 due to some ancient internal code that won't work on anything more correct that are at least rolling out Chrome on their standard desktops as an alternate choice for everything that doesn't rely on old IE bugs.
They are still pretty much all on XP, but new laptops are generally Windows 7 (with IE8) and I suspect Win7 will be rolling out to older standard builds (both desktop and laptop, machines old enough to not be Win7 compatible having been replaced already) as the first thing the relevant TS departments do after the Christmas/NewYear non-emergency-work freezes.
It's definitely nothing like IE4/NN4 days, and it looks like IE8 is finally falling off the radar, with IE9 to follow in the next couple years. It's only getting better. IE8 was really the last relatively bad browser imho. IE9 has some quirks, and IE10/11 are actually pretty nice (though IE11 is the most buggy browser MS has released since IE6, possibly more so).
Yes, there are still browser compatibility issues.. but they are so few and far between for day to day use. Except for WebRTC and WebAudio, things are really solid.