It is my understanding that China has 1.66. Also that new players people are getting in the U.S. have 1.64. This last item (if true, and I think I recall people posting here stating this) would imply that Panasonic considers this 'mainstream' if they're putting it in players shipping now. Why they haven't made this available to others in the U.S. is beyond me.
As much as I like this player, and the tools it provides to get good HDR output, I am not impressed with the support given to it - in terms of this firmware issue, addressing the disc reading problems many of us have experienced, considering implementing some features that would make these players much more user friendly, etc.
Considering that new players are shipping with 1.64 which was never released anywhere and 1.66 has only been released to China (and only for the 9000) when all previous releases were released everywhere at the same time says that 1.66 was already in the works and would probably be released in the near future but like I said, it would not surprise me that the pandemic put a hold on all new and in progress development and delaying the full release of 1.66 or whatever comes next.
It’s a bit much to be expecting any company to be running business as usual right now.
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