Last night in Japan time, the 17.1 for Microsoft Dynamics 365 Business Central SaaS (BC17 CU01) was officially released.
What’s new or changed: Update 17.1 for Microsoft Dynamics 365 Business Central online 2020 release wave 2
Please note that new customers will automatically get the latest builds of Business Central (17.1). If you are an existing partner/customer, you will receive an email notification as soon as your environment has been upgraded.
Version (2020/11/20): W1 17.1 (Platform 17.0.18204.19023 + Application 17.1.18256.18732)
Also, from my previous experience, if the environment is still at BC 16.5, after performing a Major Update, the environment will be upgraded to 17.0 first, and the next day it will be to 17.1. If you don’t want this, you can submit a Service Request to Microsoft Support and upgrade directly to the latest version.
Update 17.1 for Dynamics 365 Business Central 2020 Release Wave 2 On-Premises has been released on November 10th.
Cumulative Update Summary for Microsoft Dynamics 365 Business Central（November, 2020）
Version: W1 17.1 (Platform 17.0.18204.18458 + Application 17.1.18256.18474)
Hope this will help.
Thanks for your reading.