Bethesda is teasing a Fallout announcement.

The address for the Bethesda Blog now contains the word “Fallout”, and an image on the site shows a countdown timer that has 18 hours remaining.

According to a post on Reddit, the source code for the page contains the word “Fallout 4”, as well as references to preorder links for Xbox 360, PlayStation 3, Xbox One, PlayStation 4, and Windows PC.

One user also found the following text:

“PA system failure has occured. Shutdown of the Masterbrain has been authorized and all sensitive materials have been removed for security purposes. Please attempt re-access. Have a pleasant day.”

Meanwhile, the Bethesda Game Studios Twitter account has tweeted the following image:

Cover photos for the official Facebook pages of The Elder Scrolls, Fallout, and Skyrim have all been changed to the "please stand by" image as well.