Rumor: Internal code names or possible future map names leaked due to mistake

When Onslaught first launch last night on Xbox One, it appeared that some new map names or possibily the internal code names of the Onslaught maps were leaked. The names leaked are the same ones that were reported earlier in November. All these names appear to be codes names; not the final names.

• Battery
• Red River
• Rumble
• Dome

One user, @Matt_Lawrence02, sent us an image that when he tried loading up Red_River, the Containment background image appeared, which leads us to believe that these aren’t future map names.

Thanks for all the tips! Main image via @Pysco_Slim