Only two major CPU architectures have not received some sort of official response from their vendors regarding Meltdown & Spectre: SPARC and Itanium. Notice any pattern here?
Look at how seriously a REAL systems company takes this:
Meanwhile, all our poor customers hear from us is deafening silence. I've heard some people suggest that SPARC is not susceptible. I doubt that, but even if that were true, then why would we not be telling everyone who will listen that our chips are safe? The truth is probably that we don't even know yet. I bet ES wishes he kept a few more of the microelectronics team around right about now. Our customers are boned.