In a support forum post, Microsoft said that it will finally release a Dark Mode for Outlook.com. Someday.

“We’ve been working on Dark Mode for a few months now and you can expect this in the product soon,” a Microsoftie identified only as Philip wrote in response to a request for this feature. “One reason for the delay is our insistence that we deliver the best Dark Mode of any leading email client (you’ll understand when you see it, I guarantee).”

Many will find that last statement somewhat ironic given that Microsoft is now delivering the worst-imaginable Dark Mode experience of any leading desktop operating system, in Windows 10. But we can also look to last Halloween’s “sneak preview” of an Outlook.com Dark Mode to further question this assertion. That preview wasn’t all that impressive either.

“The sneak preview you saw last year at Halloween was a prototype that required a lot more work to be ready for prime time,” Philip explains. “We’ve redesigned the colors and code multiple times and are proud to enter the final stretch.”

Whether this Dark Mode or something like it comes to Microsoft’s many other Outlook clients—like Outlook on the Web and Outlook mobile for Android and iOS—is unclear. But Outlook 2016 for Mac and Windows—and Mail, Calendar, and People in Windows 10, which are a sort of Outlook client too—already support this kind of functionality and long have.

Also, the word “delay” is interesting. I’m wondering now if Microsoft didn’t originally expect to include Dark Mode in the recent Outlook.com refresh.