Trailer?

This fall or early spring.

What's missing in movies is same as in society: a good sense of work ethic and living up to ideals.

MCU films tend to average about 6 months (give or take a couple weeks) before release date to drop the first trailer. So if they go that route for this movie, that would mean we could expect the first trailer around December/January/

However, even though Marvel Studios was heavily involved in this and it is part of the MCU, it's still Sony that's distributing it and handling the marketing. So they could throw the MCU's marketing strategy out the window and there's the possibility of getting it earlier.

That's just my personal speculation though. As far as I'm aware, nothing's been announced.

Nillindeiel

Agent Hill: ...Then aliens invaded New York and were beaten back, by among others, a giant green monster, a costumed hero from the 40's.... and a god.

Agent Ward: I don't think Thor is technically a god.

Hill: Well...you haven't been near his arms.

~Agents of SHIELD; Season 1 Episode 1 "Pilot"