just compare the spec sheets on their website to both years. There is no changes on the GS model other than the MSRP.
GX as it states has now auto on/off headlights and rain-sensing wipers standard
GS - no changes
GS with Luxury pak - no changes
GT - no changes but deactivation has been dropped, there will be a turbo version coming
AWD for 2020 was a $2000 option for 2021 it's a $1500 option
However prices have increased across the board, except the GT
GX (FWD/AWD):
2020 - $23,950 / $25,950
2021 - $24,550 / $26,050
GS (FWD/AWD):
2020 - $26,650 / $28,650
2021 - $27,350 / $28,850
GS Luxury Pak AWD
2020 - $30,550
2021 - $30,750
GT AWD
2020 - $33,850
2021 - $33,850
no changes on colours or colour pricing