How much longer will unreal engine support Maxwell gpus?

How much longer will unreal engine and software raytracing be supported on Maxwell gpus? I don't want to pay over $2500 in a gpu plus tax and shipping (I only buy from USA sellers and I prefer not to buy used if I am to drop thousands on a gpu) when I can spend a couple hundred on a better Maxwell gpu. I need 24gb vram minimum so I'm considering if I stick with Maxwell I will use a m6000 quadro as they have a 24gb option
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Last time I checked it can. But my question is for how much longer? My titan xp is still supported just for context