Good day, @blairkweskindesign.

I recognize you want to know when the exact time to add a markup on the estimate feature will be available in the QuickBooks Online. I'm here to shed some light on this topic.

Every QuickBooks user can send product suggestions at any time. There is no limit to how frequently you can provide feedback or insights to our developers. That said, we're unable to provide information on when our engineering team review and work on requests. 

When it comes to projects and product enhancements, our developers work internally. To keep updated on any changes to our software system, visit this link at any time: QuickBooks Product Updates.

Furthermore, there is a separate forum called Intuit Developers, where you can find and connect with our developers who can assist with app integrations, contribute to our software development, and create innovative features for QuickBooks.

In case you're interested, I've included the following links below:

Ask questions to our developers: Intuit Developer Support.

Create your Developer profile: Create an Intuit developer account.

I'm always available if you have any queries or need help with reports in QuickBooks. Have a great day!