An unfortunate datapoint: for one of our products I'm still seeing >25% users on IE8.

This is a (primarily UK) product most of whose users are on internal bank networks. It's come down from about 40% 2 years ago, so it's heading in the right direction - but I'm not sure I see it going away any time soon.

There's huge organizational inertia inside these banks around IT systems - if we want to serve them, we need to support IE8 for the foreseeable future.