The 2014 ISI version isn't updated to DX11 I believe. There's also a 2016 version currently at 3.0 (I think) which was used in some RD events last year that might be DX11 updated (but I'm not certain), though I honestly don't know where to get it.
This ^^ was linked over on the official forumsI have the 3.0 version and it's very good, basically a texture update of the older ISI/3PA version.