In the recent scan from V-Jump, it was revealed that Final Fantasy V's Gilgamesh has the an array of weapons in his disposal! It seems that Cosmos' side will have quite a problem with this guy, especially Bartz.
Being a weapon collector, Gilgamesh brings a number of arms into a fight. Each time he attacks he changes weapons. It sounds like you won’t know which sword Gilgamesh uses for each strike because he doesn’t even know himself. During what appears to be Gilgamesh’s EX-Burst, he drew the powerful Excalibur sword... finally!
The said magazine also mentions that they will give readers a code to download Squall's Leon costume for the said game. This costume is also available in Europe's Dissidia 02 [duodecim]: Final Fantasy Legacy Edition. As of press time, Square-Enix hasn't mention any plans in releasing this extra outfit in North America.
Source: Siliconera