WATCH: "Arrow" Season 4 Trailer Debuts Online

"Arrow" star Stephen Amell debuted the first official trailer for fourth season of the show on his Facebook, which reveals what Oliver Queen and Team Arrow have been up to since the season three finale.

When we last saw Oliver, he was riding off towards Coast City with Felicity (Emily Bett Rickards). Digg (David Ramsey) was left holding down the fort with Thea (Willa Holland), Laurel Lance (Katie Cassidy) and several other members of Team Arrow.

Season four will see the show through a few changes, including the rebranding of Starling City to Star City and a new headquarters for the main team. Additionally, executive producer Marc Guggenheim revealed that the show would take on a lighter tone.

Starring Amell, Rickards and Ramsey, "Arrow" season four is scheduled to debut Wednesday, Oct. 7 at 8 pm EST on The CW.

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