Inside the Kingdom, an event in Burbank that provided select gamers with advance access to Kingdom Hearts 3 material, was recently concluded. Zephyr, of KHInsider, was one of the lucky individuals invited to attend this special event. Zephyr has done their best at recreating what they saw in the gameplay videos shown at Inside the Kingdom.
Luckily for us, it looks like they've got a pretty good memory:
The Keyblade on the right is just that – a Keyblade. It does share some characteristics with other Keyblades in the game's past, but we're not going to speculate too much on that front.
However, the weaponry on the left is quite new to the series. The two guns above are wielded by Sora in a gameplay trailer shown at Inside the Kingdom. They supposedly formed together to turn into the cannon that you see below them. This cannon emitted a rainbow of colors as it was used, its power being quite devastating.