Looks like it’s Svatova with a push that looks intended to go towards the Kupyansk direction to me but it’s hard to tell, a big push could change quickly depending on level of resistance and any encirclements that might happen. Assuming they actually broke the line in some way. The Russian attempt to do a big offensive could go as badly as the Ukrainian one, I wouldn’t rule that out with the cluster munitions which could easily slow them down.