Good morning guys, sorry for the delay. Firmware version 1510's release notes are as follows:
-Apply patch for security issue
-Add the HEVC for enhance the streaming compression to the FHD model ( Amazon)
-Spotify (NaCl) App - Troubleshooting audio lag
-Youtube Live TV DRM contents support
- Other Minor Fixes
Technically you can turn off the bluetooth using the service menu, but only our Remote Support team can do that for you. (The M,MU, and MS models I do not recommend doing so though as the remote connects over bluetooth and I'm sure you see where I'm going lol) So far we have not been given any dates or anything just the standard "we're looking into it".