Don't worry they'll be back with the "pro" line for an additional $50.
It already was a "pro" line and cost more than the silver ones. ;)
I quickly bought a space gray trackpad just after they discontinued them. Patiently waiting for them to release the space gray compact version of this new keyboard along with the new pro macs ;)
Wait, those are already discontinued?
At this rate we'll need a killedbyapple.com page
yeah, apparently Apple only "intended" them to be used with the iMac Pro line to align it with that Mac's color scheme. Since the line was discontinued, they killed the matching accessories, or so the theory goes.
That sucks. Though I don't know how much I give for their space grey - my M1 and iPad are both supposed to be space grey but they are not ever close to each other in color.
For me it wasn't about the matching the machine (although I do expect the trackpad and keyboard to match), it was about having the black keys and the non-shiny surface. Thankfully I have ~3 sets of the keyboard/trackpad, but I might have bought a spare had I known it was being discontinued.