Intel CEO Brian Krzanich confirmed in the Q4 2017 earnings call that the company is working on silicon-based fixes for Meltdown and Spectre that will be applied to products released before the end of 2018. That roadmap may or may not include the company's upcoming 10nm "Cannon Lake" chips.
Sources had indicated that Nvidia would reveal new graphics cards at its developer conference in March, including units dedicated to gamers and cryptocurrency miners. New reports say otherwise.