So I went to my search engine of choice, typed in solid state battery, set the time range to 1 month, went to the news tab, and this is the first link. 2 days old.
Just because no one went out of their way to remind you that researchers are continuing their research doesn’t mean they stopped doing it. And when the bar is this low to satisfy your curiosity, it really is on you. It would have taken less time to get the highlights than it would to post your comment.