What are the pre-order bonus stuff?

[InColius]

So I have Google searched it but I can't find anything that actually explains what the benefits are all the sites including the official website and Steam just list the benefits as if we should know what these things are?

These are the listed pre-order benefits;
New Game+ Horse travel companion.
Traveler’s Attire – fit for a seasoned warrior.
Broken Armour dyes from Baku’s shop.

What is a horse travel companion? By new game+ are they saying this is something you only get when you do new game+ or are they saying this is something everyone gets when they play new game+ but if you pre-order you can also use it in your first playthrough and don't have to wait for new game+ to get it?

Anyone have any links to what the traveler's attire looks like?

Anyone have any links to what the broken armour dyes look like, how do dyes function in this game? Is it like a transmog system or like an actual single use dye that just recolours your existing armour?