HDMI 2.1 cannot be added via a firmware update. This applies only to optional HDMI 2.1 feature such as ALLM and eARC that can be enabled on HDMI 2.0 chipsets. HDMI 2.1 is a completely new signaling technology so HDMI 2.1 ports requires new hardware.
HDMI 2.1 ports will be embedded in Sony's 2020 Z8H (ZH8) and X900H (XH90).
I doubt that they are withholding information at this point. I think it is more likely that Sony has additional high-end TVs planned for the second half of 2020, but that's just speculation for now.
Sony being silly? You are the one being silly! Now you are on here posting all this nonsense? 2019 sets cannot be upgraded and will never be upgraded by a firmware update to HDMI 2.1, it is not possible
kjkjk32 wrote: ↑13 Jan 2020, 22:57
Sony today is a very small company!
Sony is having severe financial difficulties!
Sony has no money to invest in TV development every year !!!
kjkjk32 They were in financial they aren't now worth 100 Billion US dollars on NYSE. Only Sony Mobile is stagnating now.