This is probably an jfrog / artifactory issue, but since it worked in docker 1.9.x maybe something can be done for backwards compatibility.
$ docker pull jfrog-docker-reg2.bintray.io/jfrog/artifactory-oss:4.3.3
Error response from daemon: unsupported manifest mediatype: application/json
$ docker info
Containers: 8
Images: 61
Server Version: 1.10.0-rc1
Storage Driver: overlay
Backing Filesystem: extfs
Execution Driver: native-0.2
Logging Driver: json-file
Kernel Version: 4.2.0-16-generic
Operating System: Ubuntu 15.10
CPUs: 2
Total Memory: 3.86 GiB
Name: docker110
ID: JKER:Q4EU:JYCI:37P2:TR7B:O4KM:W77J:WJLK:YPS3:JD4G:ZYW5:64LA
WARNING: No swap limit support
Labels:
provider=digitalocean