If you ask any Xbox One owner what they would like for their Xbox One to do, outside of many other things they would probably want 1080p capture! Later this year when the next big Dashboard Update rolls out, GameDVR will be getting a highly anticipated upgrade to capture quality. Not only that, but the new update will also enable you to capture to an external device! The only downside to this, your FPS is still capped at 30fps. The upside, if you are an insider, you can test this update early!
However, if you want to capture at 4K 60fps, then you can wait for the Xbox One X and be able to do so this November! November 7th to be exact!