On the 16th December 2020 Frontier released a more detailed Q&A, answering some more pertinant questions. These have been added to the Odyssey: Full Breakdown page, however you can see the main changes below. Today (17th December) at 12pm UTC there is a Christmas stream (amongst other things) which will have a combat based section revealing more of what to expect.
PC Specification: Unchanged from the original release.
2. PLANETS
> Introduction
Frontier have also confirmed that in-game lighting has been improved for every aspect of the game and as you might expect a lot of new code has been added with some systems seeing completely refreshed for Odyssey.
> Planetary Atmospheres & Surfaces
Frontier have confirmed that there will be an upper cap on high gravity worlds where it would not be safe for commanders to deploy into. Gravity will also affect how high a player can jump and thus how effective their jetpack will be. For outposts in Zero-G players will use mag boots to attach the player to the floors.
3. SPACE LEGS
> Avatars & Space Suits
Frontier have said that there will be a, “vast amount of ways Commanders can customise their avatars in game.”
> Equipment, Weapons & HUD
Players will have similar functions as the ship in order to display relevant on-foot information. Frontier have also confirmed that players will have night vision available to use.
Weapons will be customisable both internally and externally, from sights and suppressors which suit the players playstyle, right down to weapon skins.
> Combat
Frontier have confirmed that combat will be optional, leaving players to find other ways of completing ground based missions.
> Vehicles, Ships & Travel
Frontier have confirmed that players who board another players ship (presumably by Frontline Solutions or Apex Travel) will be able to deploy in that Commanders SRV or SLF with physical multicrew.