Posted by Apple Product Security on Sep 23

APPLE-SA-2015-09-21-1 watchOS 2

watchOS 2 is now available and addresses the following:

Apple Pay
Available for: Apple Watch Sport, Apple Watch,
and Apple Watch Edition
Impact: Some cards may allow a terminal to retrieve limited recent
transaction information when making a payment
Description: The transaction log functionality was enabled in
certain configurations. This issue was addressed by removing the
transaction log functionality….