The Google Pixel and Pixel XL phones released this weeks offer some pretty robust features when it comes to the camera and video recording. It offers UHD 4k at 30fps and keeping up with the Google Nexus 6p of last year it retains the slow motion mode that made it competitive with the iPhone 6s and 7. However there are no further improvements when it comes to frame rates above 240fps. It is however a much better phone with faster CPU and GPU which should help with all imaging tasks.
The new Pixel Phones are by any measure the flagship Android phone for those seeking Google update support and a more pure Stock Android OS experience. You get the benefit of no bloatware, No Android skinning and up to date updates that made the Nexus line of phones so desirable to users of the platform.