Unfortunately WiFi 6E requires routers to have the latest chipset. Broadcom has a number of chips for 6E access points. I’d think the router/access point manufacturers would be able to deliver products to market this fall:
Enterprise 6 GHz Wi-Fi AP Solutions
- BCM43694 — 4x4 Dual Band Wi-Fi 6E SoC with 160-MHz Channel Support
- BCM43693 — 3x3 Tri-Band Wi-Fi 6E SoC with 80-MHz Channel Support
- BCM43692 — 2x2 Tri-Band Wi-Fi 6E SoC with 80-MHz Channel Support
- BCM47622 — Dual 2x2 Wi-Fi 6E SoC with Arm Processor
Residential 6 GHz Wi-Fi AP Solutions
- BCM43684 — 4x4 Wi-Fi 6E SoC with 160-MHz Channel Support
- BCM6710 — 3x3 Wi-Fi 6E SoC with 80-MHz Channel Support
- BCM6705 — 2x2 Wi-Fi 6E SoC with 80-MHz Channel Support
- BCM6755 — Dual 2x2 Wi-Fi 6E SoC with Arm Processor
Not sure when the first 6E client devices will be available, but I’m not betting on iPhone 12.