Looking at avforums, they state it could be... (source https://www.avforums.com/threads/2021-oled-discussion-lg-panasonic-sony-etc.2339180/ )
Which TVs have the new LGD (LGE 'Evo') panel?
Latest Update 18/07/2021
| C1 |
G1 |
A8xJ |
A90J |
JZ1500/2000 |
55-65 = Both
77 = Evo
83 = Evo |
All Evo |
55-65 = Both
77 = Evo |
All Evo + Heatsink |
Not Evo + Heatsink |
(Presumably production of the old non-Evo panel will eventually stop either later in 2021 or by some point in 2022 and the Evo panel will be used on all OLED TVs)
Note that the Evo panel on its own does not determine the brightness of the TV, the TV itself has software settings that adjust how the panel is used. Normally these will be inaccessible to home users, and while they can be accessed on the C1, this will almost certainly be changed in a firmware update, plus it was almost certainly invalidate the warranty if altered, not to mention there are no guarantees that adjusting the settings won't damage the TV in the long term
