As per the title on the Arduino web site. No issues here updating under win10 x64.
PuTTY 0.76 released.
MyController 2.0 is ready for testing
serial, Ethernet to MQTT
Arduino version 1.8.15 now available for download
PuTTY 0.75 released.
Forwarding stops working
Arduino version 1.8.14 now available for download