Anything said here is speculation. I'm not saying they won't release anything new, but they just released the new version of the Premiere and Premiere+ in September
. Note that the "new" Ultra is simply the current version repackaged with better headphones, no other change. So, while Roku won't say if anything new is coming until it actually arrives, I'm not expecting anything else this year.
Now, there is a big software update that's rolling out
, but that's all that's been announced.