Will there be missiles in the space combat? How about wingmen fighters? Do they dock?

Missile turrets are available now. There are various quality variants for all turrets including heavy and light turret types and quality's ranging from basic to epic (5 tiers).

Missiles work a little different in Stellar Tactics. In an future patch you will be able to adjust missile warheads for different damage types and tune the missiles in various ways for speed -vs- damage etc.

No wingmen at this time. Your ground team has stations on your ship and their skills determine bonuses that get applied to piloting, weaponry, electronics and targeting. For example, the team member set as your pilot applies a bonus to your ships speed, turn rate and evasion - the team member in your weaponry station provides a damage bonus, reload speed modifier and turret efficiency bonus etc. You can switch team members between stations at any time. When you destroy an enemy ship you gain experience in your ship skills based on the station your team members are assigned to. You can see this at around 55 seconds into the video.

Sounds awesome!