JR East announced price increases that take effect with the 10% consumption tax on October 1. The increases apply to basic fares, regular express train fares and Shinkansen fares. There are downloadable PDF files of the price changes in English and Japanese.
There a few Mobile Suica changes too. Mobile Suica eTicket refund fees are rising from 310 ➡️ 320, Mobile Suica re-issue fees are rising from 510 ➡️ 520. Green Seat Upgrades are also rising, I will update those changes to my Suica App page in a day or two.
Even though the JAPAN CASHLESS rebate program does not cover transit purchases, you can ease the pain by registering your Apple Pay Suica with JRE POINT. Not only can you get JRE POINT with Suica transit use from October 1, and you also get JAPAN CASHLESS rebates as JRE POINT with Apple Pay Suica purchases, which you can then use for free Suica Recharges. Details on the Tokyo Cashless 2020 rebate page.