Update: Thanks for watching, folks! In case you missed it, the reveal was for Unreal Engine 5, coming to Xbox Series X and Xbox One in 2021. Catch the full replay above.

Original Story: Yesterday, Geoff Keighley's Summer Game Fest revealed Tony Hawk's Pro Skater 1 and 2 remastered via a special announcement, and now he's doing it again! He says today's event is "one of the more important moments this summer," but at the time of writing, we have no clues as to what it is.

"I am genuinely excited about today and honored to have the opportunity to share this with you. This is a taste of what's ahead for what's bound to be really awesome summer for games."

If you want to check out today's event for yourself, you can watch it in the video above. The announcement kicks off at 8am PT / 11am ET / 4pm BST, and it could be a game reveal, hardware reveal, or perhaps not even related to Xbox at all! The event is scheduled to last for one hour.

What do you think today's Summer Game Fest announcement will be? Share your predictions below.

[source youtu.be, via twitter.com]