Those disappointed by January’s list of new Xbox One backwards compatible due to the lack of promised titles like Call of Duty: Black Ops may not have to wait too long for the shooter to be added. A leak Saturday points to the popular Treyarch title as being close to release.

Spanish site Solo Xbox One (via ICXM) shared images from a reader showing the Call of Duty: Black Ops – Annihilation Pack 3 being installed on their Xbox One. Incidents of Xbox 360 games showing up in some Xbox One owners “Ready to Install” can occur when the title is close to release. David Anthony of ICXM gave the example of Age of Booty appearing for him prior to Microsoft announcing January’s list.

The COD: Black Ops - Annihilation Pack being installed on an Xbox One. [Image via Solo Xbox One]

It’s important to note that Microsoft has changed the release of Xbox One backwards compatible titles following the January update. Games will no longer be released in a batch once a month. Instead, the games will be released as they are ready.

“Based on your feedback, the Xbox Engineering team will start to pilot a new way to launch Xbox One Backward Compatibility titles. Starting today, we’ll release titles as they become available, rather than a set monthly launch date,” it was announced by the official Xbox Wire blog. “What this means for you is that you won’t have to wait to find out the latest titles; we’ll release whatever is available, when they’re available, once each title has received the engineering and publisher stamp of approval.”

All three BioShock titles along with Halo Wars were part of the original tease of upcoming backwards compatible titles for the Xbox One that have yet to appear. Interestingly though, Tekken Tag Tournament 2 is another title that has appeared in some Xbox One owner’s “Ready to Install” list.

Reddit user Linda__Martin shared an image of Tekken Tag Tournament 2 being installed on her Xbox One. Some other posters that own the game digitally were also able to find the game ready for install by going to the Achievements app and selecting the game there, going to the Game Hub, and then selecting the Game Store.

Tekken Tag Tournament 2. [Image via Tekken]

As the Inquisitr previously covered, Xbox One manages backwards compatibility by emulating the entire Xbox 360 operating system. This allows Xbox 360 games to run on the Xbox One without any special coding or other workarounds. The major hurdle that is left is licensing agreements with the development studios and publishers to allow the games to be played on the Xbox One and listed for sale on the Xbox Store for the console.

Xbox One backwards compatibility has been a hit for the console since it was announced at E3 2015. In addition to providing one of the biggest applause points of Microsoft’s press conference, console owners have dropped more than 21 million hours into playing Xbox 360 games on their new console thus far.

There have been some issues with Xbox One backwards compatibility though. As Eurogamer recently pointed out, some game have seen performance issues. Halo: Reach‘s performance has been lackluster, rendering some sections of the game nearly unplayable. Likewise, Mass Effect sees problems during framerate dips during combat while Gears of War: Judgment is deemed “nearly unplayable due to severe performance drops.”

The performance issues of Xbox 360 games on the Xbox One are largely on a case-by-case basis. Performance is actually improved in some cases, however. For example, games like Hydro Thunder and Condemned see better performance overall, while there are spots of improvements such as the elevator loading scenes in Mass Effect.

As a reminder, the free January Games with Gold Xbox 360 titles for are backwards compatible, too. Deus Ex: Human Revolution is the current offer with more coming at the start of February.

[Image via Call of Duty]