It's slowing down but Apple is still improving 10-15% per year. Zen 6 is rumored to hit 6.6 GHz later this year. Apple and Intel still have room to steal V-Cache.

What will the effects of these changes (or lack thereof) be on software development?

Probably a Python interpreter running on WASM inside Electron in a VM.

> We've been stuck in the 3-5 Ghz range for a long time. I think we're scaling by adding cache, cores, and specialized instructions.

Well, whatever works. Does it matter if it is Ghz or something else?

> Due to observations like Amdahl's Law, PC hobbyists aren't seeing great returns on new machines. We've had 8+ logical cores for a long time now.

If you look at Ryzen gains per generation I'm not sure how you can say this? Maybe less lately due to AI bloating the prices, attention shifting to GPUs etc, but CPUs have definitely been growing.

> So where can we go from here? What will the effects of these changes (or lack thereof) be on software development?

Software development has introduced so much bloat there's infinite room to grow before it is a hardware issue.