The organizers have announced more changes to the route, but without a detailed profile. This description on Cyclingnews will have to do:
"The race organisers haven't, though, announced any precise route details beyond that point, in order to encourage fans to follow the action on television rather than the roadside. But they have confirmed that the
Catsberg, Zwarte Berg and Vert Mont climbs won't appear this year, and also that the riders will tackle the Kemmelberg three times rather than twice.
"After 130km on the flat, the first of 11 climbs, the Scherpenberg, will arrive with a little more than 100km left to race. Preceded by the Baneberg and the Monteberg, the Kemmelberg will be the final hurdle in the initial group of five ascents. The three gravel/dirt sections close to the village of Ploegsteert, dubbed 'Plugstreets' by Allied soldiers, follow soon after.
"A second passage over the Monteberg and Kemmelberg begins the second section in the low hills typical of this part of Western Flanders. The Kemmelberg features again as the last rise in this series. From the summit, there are 40 mostly flat kilometres remaining."
https://www.cyclingnews.com/races/gent-wevelgem-2020/preview/