The workbench no longer says it's for overclocking. Is this an error or planned?

I'm kind of guessing an error. You'll definitely be doing tuning on your workbench. It won't be the same potency of high-end overclocking that something like the Collider will give you, but you'll need a way to tune and adjust the basics of your gear on your own.

Yeah, I've seen this same question a couple times. I think it was just somebody at Turbulent cleaning up the SKUs a little bit, not a design decision to change what the workbench does.