Talking about the game back in June, Miyamoto stated that there were "no bombs this time": http://www.gameinformer.com/b/news/archive/2015/06/16/a-star-fox-zero-conversation-with-shigeru-miyamoto-and-his-team.aspx
However, the new footage clearly shows not only the actual use of a Nova Bomb, but also the bomb icons above the boost gauge, indicating how many the player has:
https://www.youtube.com/watch?v=E8N3le-tGvc
Looks like they had a change of heart.