C++ is still very heavily used in industries where speed (and memory compactness) matter. Games, simulation, VFX...

For example, most software used to make film movies / CG imagery: from modelling (Maya, SI), to texturing (Mari), to rendering (PRMan, Arnold, VRay, Mantra, Hyperion, Manuka), to compositing (Nuke).

And it probably will be for many years to come as there's such an infrastructure there.