Call of Duty publisher Activision remains optimistic that it can implement its online services on Nintendo's upcoming Wii U console. The company told CVG that it is "working with Nintendo on the possibility of releasing the Call of Duty: Black Ops 2 DLC Map Packs and the DLC Season Pass for this new gaming platform".More details will be released at a later date, the company added. Earlier on Monday, Activision revealed that it will make its online service Call of Duty Elite free for customers - though the DLC packages will be stripped out and sold via a standalone season pass. But the group warned that the DLC packs "may not be available on all gaming platforms".