Tom Palfreyman, who has been heading up the team developing and enhancing the new Trial Balance feature in QuickBooks Online Accountant tweeted out that the new feature now has the added capability of exporting to Excel. At the time of announcement at QuickBooks Connect the Trial Balance feature could only link the QBO Data with Intuit's Tax Online product. Intuit stated that additional capabilities would be forthcoming. As you can see below, one of the promised enhancements, the ability to export the Trial Balance to Excel, has come to fruition.
Intuit is certainly 'on the move' when it comes to making enhancements for Accountants, Bookkeepers, and ProAdvisors using the QBO-Accountant platform with which to work with all of the QBO clients.