No. Nothing approved or on track for approval in foreseeable future.
There's a bunch of missions that will have landers, sample return, impactors and other interesting activities at different bodies, but none with wheels.
The closest thing to a rover that is probable to see the light of the day currently would be TALISE (not yet approved), a boat-probe which would navigate Ligeia Mare, the second largest lake on Saturn's moon Titan.
Of course there's a myriad of other proposals in different stages, many of them rovers, but it's currently hard to predict which ones are realistic to work, obtain approval, funding, and a launch schedule. Vast majority of them will never leave the stage of drafts, so it's pointless to guess anyway.