Avengers: Infinity War - 12 Big Questions After The New Trailer
8. Is Loki Doomed While Thor Looks On?
Speaking of the Black Order, when we first see them in this trailer - which also represents our best look at them so far - they're surrounding Loki, and it doesn't look like things will be going well for the God of MIschief, who is forced (or chooses) to hand over the Tesseract.
Just before this, we get a shot of Thanos grabbing Thor by the head. The impulse reaction, as Thor seems to scream in pain, is that he's squeezing his head - but it could be that he's instead turning it to make him look at something.
This would be a natural point for Loki to die, and doing so in front of Thor would be the most brutal way possible. In fact, it might all be too obvious, and not the kind of thing they'd spoil in the trailer, but the signs here at least do point to this sad parting for the Asgardian brothers.