Judging from recce on-board video SS 15/21 Paijala toward the end has changed - https://youtu.be/Q7u-J02KB-c
Till 16:48 all is in accordence to - https://www.rally-maps.com/Rally-Finland-2017/Päijälä and same route as in 2014. After then stage turns in to Aulusniementie road and after loop comes back to the main road.
Two spectacular places become less spectacular now...