Dear Jm,
There are no updates yet. I am providing the explanation below.
We were working on one solution for the 3D model viewer to solve the issues - post which we had planned to take landscape mode. However, this option is failing in the Sanity cases (basic functionalities) . Hence we are now exploring another approach. Once this works , we will be able to asses the landscape mode. Please let me know if you have further questions.
Regards
Darshan Kamat