As mentioned the Docker snap release planning in this thread
We also plan to request a new track 17.03 for the sake of other people who
want to stay with it if they don't want to switch to 17.06-ce for some
reasons when "latest" track is automatically upgraded to 17.06 one month
It would be really useful for some users who want to upgrade the snap at
their own pace.
Could you grant a new track "17.03" for Docker snap?
Track 17.03 created, let us know if you need anything else!