What are the chances this will impact the war in Ukraine in a positive way for Ukraine? Will we possibly see an end to the war soon?

Zero chances it will end the war. Russians are used to swapping out regimes all the time.

This is just an infighting between two criminals, whoever wins is not going to be better for anyone.

Wanger is war fighting force, they're not a peace-keeping unit, they'll keep the war going if it benefits them.