情報來源：
https://www.microsoft.com/en-us/microsoft-365/blog/2021/10/01/its-easier-to-create-together-with-microsoft-365-and-office-2021/
短網址：
https://reurl.cc/xE106N
版面關係只節錄部分段落
Office Home and Student 2021 is $149.99 USD and includes Word, Excel,
PowerPoint, OneNote, and Microsoft Teams for PC and Mac. Office Home and
Business 2021 is $249.99, comes with everything in Office Home and Student
2021, plus Outlook for PC and Mac and the rights to use the apps for business
purposes. You can buy Office 2021 from retailers worldwide and via
Microsoft.com starting October 5, 2021.
Both Microsoft 365 and Office 2021 run on Windows 11, Windows 10, and the
three most recent versions of macOS. Note that Office 2013 won’t be
supported on Windows 11, so now is the right time to upgrade to Microsoft 365
or Office 2021 if you’re planning to upgrade to Windows 11. Finally, to use
Microsoft 365 or Office 2021, both a Microsoft account and an internet
connection are required.
Office 2021 家用版為149.99美元，內含Word、Excel、PowerPoint、OneNote及Microsoft Teams。
Office 2021 家用及中小企業版為249.99美元，內含家用版所有內容及Outlook加強版。
發售時間為2021年10月5日。
Microsoft 365 及 Office 2021 可在 Windows 11、Windows 10 及 MacOS 上執行，
需具有Microsoft帳戶及網路連線。
題外話：Office 2013 將無法在Windows 11上執行。
售價上與2019年版相同，以2019版來看預計售價為4790元及8790元，
功能面上沒有太大的進化，但Excel的函數有新增更實用的Xlookup。