Thanks for getting back into this thread, Becky. I'm here to address your concern regarding the new invoice layouts in QuickBooks Online (QBO).
At this time, our product developers haven't provided an update for a specific date of when you'll be unable to switch back to the old invoice layout. That said, you can keep utilizing it until price rules become available for the new invoice experience.
If you need to make modifications or want to personalize your invoices and other sales forms, follow the instructions in this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.
I'm always here to help if you have further questions about managing your sales transactions. Feel free to add a comment below. Have a great day!