Apple announced new security updates November 1st 2017. This time they explicitly list KRACK fix but only for iPhone 7 and iPad Pro 9.7 inch. Does that mean everything else was already patched or that everything else is vulnerable? Apple need to be specific and clear.
Official apple announcement: https://support.apple.com/en-us/HT208222
At the bottom of that page:
Wi-Fi
Available for: iPhone 7 and later, and iPad Pro 9.7-inch (early 2016) and later
Impact: An attacker in Wi-Fi range may force nonce reuse in WPA clients (Key Reinstallation Attacks - KRACK)
Description: A logic issue existed in the handling of state transitions. This was addressed with improved state management.
CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU Leuven