Hi @JOLIE E ,
Welcome to Q&A forum!
If you become an Office Insider, you will be able to update Office through the Beta channel. And you will get frequent updates with new features and improvements.
Link: Join the Office Insider Program.
Besides, please note that you cannot change the update channel of Word alone. The plan will change the update channel of all Office apps (including Excel and PowerPoint, etc.) to Beta.
For more information about Update Channel, please refer to:
Office Insider program
Changes to update channels for Microsoft 365 Apps
Hope the information could help you.
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