It’s likely a combo of the cost of the new OLED screen and an acknowledgement of the perceived value of the instrument in the market.
I thought it was expensive for what it is before, but I know how unpopular that opinion is…
But the price may be entirely justified given the amount of work that went into it, and the cost of materials given the scale of manufacturing they’re engaging in. I really have no idea.
As to whether it’s a worthwhile “investment” I’m not sure I’d ever choose that word to describe a musical instrument. A more pointed question might be “is it a worthwhile instrument for my personal musical goals?”