Apparently the south of Ukraine (or the Kherson area?) is known as watermelon county. There’s activity there today.
This is all unconfirmed, but there are enough reports coming through that it’s clear something is happening. That last map looks like another pincer movement like the one that took Lyman, and the shift in activity from north to south is the inverse of the way the Ukrainians moved the Kharkiv front. You might think the Russians would learn.