Board Thread:General Discussion/@comment-24.205.68.226-20141115002013/@comment-25565151-20141201064155

Screenrant does not provide citations for saying that the scepter is an Infinity Stone. Its appearance in the Infinity Wars announcement trailer is not verifiable confirmation of its status as a Stone, since neither Kevin Feige nor any other Marvel representative explicitly stated that everything appearing in the trailer is an Infinity Stone.

The Scepter appears twice in the trailer- once directly after the Tesseract is shown, and once in the shot of Bruce Banner holding it. The first shot could be merely to show it as a manifestation of the Tesseract's power. Several shots of the Aether being used are shown following its first appearance in the trailer, so that would fit the format of the video. For the second shot, it could very well be there because Bruce Banner is holding it. Note that this is the only appearance of Bruce Banner in the trailer, and appears immediately before a shot of Thor, Captain America, Black Widow, and Hawkeye. So this shot could merely be part of showing the Avengers in the trailer.

This is all conjecture, of course. But I feel that saying that the trailer confirms the Scepter as an Infinity Stone is also conjecture. It is open to interpretation until Marvel says something definitive.