And we don't know if this is licensed or not, and many would say not. Emerson Gear is releasing their "Tactical Mug" made out of 6061T6 Aluminum and in black colour. Just like the original Battle Mug, it has rails for which you can attach whatever you want to attach to it. The Battle Mug is patented and only sold in the USA, and most probably the Emerson Tactical Mug will not be available for the US market but elsewhere.

Emerson went a little bit further here, as they have some etches or markings on the mug as shown in the photos.