Cortana reminders are in development for Xbox One

Cortana veterans using the service on Xbox One might have noticed the strange absence of one of her signature features — reminders.
For those who don't know, if you are using Cortana on Windows 10 PCs or phones you can set a reminder using natural language. Simply by saying "Hey Cortana, remind me to pick up milk at 5 pm," Cortana will log the information in her notebook, and then give you an alert on your PC or your phone based on the trigger conditions you set. You can add conditions based on location, time, and even when someone calls you.
Sadly, Cortana on Xbox One doesn't support reminders yet, but that's set to change.
In an exchange with Zach Johnson who leads Cortana's development on Xbox One, he noted that reminders are on the backlog for the console version, and work has begun to bring them across.
@Zjohnson Can we expect to get Cortana reminders on Xbox One? It's my primary use case for her. :)
@JezCorden it is on our backlog and we're starting on it this month, no release vehicle yet.

There's no planned release date as of yet, but it's encouraging to see Cortana could reach parity across the entire Windows 10 device family sooner rather than later.

Cortana has enormous potential on Xbox One when combined with the Universal Windows Platform. Soon you might be able to call an Uber cab directly using Cortana from your Xbox, rather than interrupting your game to reach for a phone or laptop. Cortana could also tie into home automation services like Insteon, powering smart bulbs and other IoT devices.