All of the following is with the new v1.4.0.20 firmware, using the wireless module, and the Mimo app:

• In 4K 60 fps, I can not switch into Cine-D.  The option is greyed out and says normal.
• If I go into 4K 30 fps and set Cine-D, when I switch to 60 fps, I can tell that the codec is being switched back to normal and that is what the menus indicate.
  
  

This appears to not be the case when using the menus on the Osmo Pocket itself nor when using the Mimo app while connected via USB to the Osmo Pocket.

Does anyone else see this?

Hi there, we're sorry for the inconvenience caused. As of the moment, Cinelike and Story Mode will only work via USB Adapter and on DJI Osmo Pocket itself. Should you have further question, please let us know. Thank you.

I just tested mine.  The first time it switched me back to 4k 30, then I went to the video setting and selected 4k 60 and it worked.  Every other test I did kept it on 4k 60 with D-Cine like.

I found if you connect wireless module after you set 4K 60fps it works.