This upgrade is nonsense, The Frame TVs have been 60Hz for a couple of years until they released new models that supported 120Hz.
The fact that recent models kept running in 120Hz mode, when the content did not provide a matching framerate, especially for static content, is more a bug or bad design than anything else.
I have The Frame 2018 (which supports 60Hz max) but only because it was the only TV that can be installed against a wall seamlessly. The picture quality and energy consumption has always been sub-par for every The Frame model.
The day LG releases smaller versions of its G-series (LG G3, LG G4), like 48", 49" or max 50", I will replace The Frame. The LG G series are the only other tv model that can be hanged seamlessly against a wall.