JR East posted a special maintenance schedule this month for Mobile Suica on 1/15, 1/22 and 1/28. The work appears concentrated on the Suica Recharge backend which hopefully points to improved Apple Pay Suica Recharge performance.
I think it also points to something else: a iOS 12.1.3 release with Apple Pay Smart Octopus/Hong Kong transit directions for Apple Maps service around January 29 Cupertino time, early am January 30 in Hong Kong. The timing fits with a full beta test cycle wrap up but more importantly it fits as a kickoff for the Chinese New Year vacation period, good news for an important market to Tim Cook who desperately needs some good news right now.
Go for it Tim! It will undoubtedly help Apple sell more global FeliCa iPhones because Smart Octopus on Apple Pay is a great marketing angle for the iPhone XR/XS models with Express Card power reserve and bulletproofed FeliCa performance. I have yet to experience a single Apple Pay Suica gate error from my iPhone XS with daily use since the launch date.
It occurred to me after posting the above that Apple has introduced transit cards and the technology behind them with larger point releases: iOS 10.1 for Suica (FeliCa) and iOS 11.3 for Beijing and Shanghai Transit cards (Apple flavored PBOC 2.0 ED/EP). In this scenario iOS 12.2 is the logical starting point for Smart Octopus on Apple Pay. However, Octopus is FeliCa which has been part of Apple Pay for over 2 years, Apple has ample engineering and testing experience with the technology to add Smart Octopus with a smaller point release, or none at all which was the case with contactless student ID cards.