Not only in WRC but ERC also. That could be last Rally Poland in this region, there were rumours of moving it to tarmac roads in Silesia. In ERC, there should be two another fast gravel rallies (Scandinavia and rotating Latvia/Estonia) so it could be easier to get calendar spot with tarmac round.
I wouldn't be surprised with Mikkelsen getting some extra gravel round this year, he was fast in Greece in rally2 and Lappi crashed in Chile last year