It doesn't list a specific style but it is described as;
Chimay Grand Cru is a semi-hard pressed cheese. The rind is natural, non-coloured, without preservatives and slightly flowery. After maturing for six weeks, its creaminess and fine taste of good, fresh, creamy milk give it all its flavor.
In the store, the rind made it look sort of like a brie or camembert, but colored much more pale yellow than white like the two listed previously.
I'm looking forward to trying it one of these days when I get around to buying some!