Digital-only releases are sadly growing more common. If you want to discuss pay-per-view, streaming and getting 3D movies digitally then we have a thread for that here:
https://forum.blu-ray.com/showthread.php?t=150710
Due to licensing and copyright restrictions, digital-only releases are unfortunately not accessible in many countries. VUDU is US-only, for example, while Sky and Virgin are based in the UK. Below is a list of all the 3D movies that haven't come out on 3D Blu-ray but did get a 3D digital release somewhere in the world at some point:
Captain Underpants: The First Epic Movie -
FandangoNOW app for Oculus Go / Quest VR headsets
Ferdinand -
HBO, Sky Cinema
Fly Me To The Moon -
HBO
Found Footage 3D -
Shudder
Hannah Montana/Miley Cyrus Best of Both Worlds Concert -
VUDU
Hondo -
broadcast on 3DGo! in 2016, no longer available
Hotel Transylvania 3: Summer Vacation -
VUDU
Jackass 3D -
unknown if still available
Jonas Brothers: The 3D Concert Experience -
VUDU
Mission Impossible Fallout -
Virgin Media, Sky Cinema
Monster Trucks -
Sky Cinema
Pete's Dragon -
Sky Cinema
The Pirate Fairy -
VUDU
Tinker Bell and the Legend of the Neverbeast -
VUDU
Trolls -
FandangoNOW app for Oculus Go / Quest VR headsets
A Wrinkle In Time -
Sky Cinema
There were others on the PlayStation Store like
The Mad Magician and the
Three Stooges shorts but these aren't listed here as they eventually did come out on 3D Blu-ray.