There will be no wave of new hardware, at least not the big waves you might be thinking off, things seem to move along with baby steps.
2018 we have seen the first true 4K dashcams, maybe at the end of this year or next year we will see the first really worth while 4K cameras.
There are hardware now that should stand a good chance of being good dashcam stuff, and as i understand it the price of it are okay to a degree makers can consider this and sell it in bulk.
But there are still some challenges in putting it all together in a good package.
I would personally like to see higher bitrates, what is the norm now i feel are a little on the low side, and its not like we need to 2 X the current highest bitrates, but IMO it need a sprinkle of pixie dust.
I am also eager to see 4K cameras for sure, but knowing the challenges i am able to restrain myself and not get too exited, though "some have done it already"
I still dont care much for any of the smart stuff, image quality as i see it will remain the main challenge for the foreseeable future, so best put your effort in that field.