Don't despair, ask the manufacturer: "The special edition of the Seon Transporter in a modern camouflage look inspired by our Eiger Extreme line" (https://www.mammut.com/ch/de/p/2510-04080-00283/seon-transporter-x/). I myself have the "normal" Seon Transporter and see no difference in the pictures on the Mammut website apart from the colour.

I don't know the difference between the two, what I do know is that I wouldn't buy the backpack again, I was expecting something better from Mammut for this price, it should also be a little deeper in terms of the dimensions. I personally find it uncomfortable to wear, especially not suitable for cycling as it has no chest buckle, I sold it after a few days because there are better models on the market than the one from Mammut.

Difficult to say as I don't have a 17" lying around but visually it looks like there's no room for it. Max 15 inch

Hello I tried it out for you today: a 4 cm federal file fits in the front compartment, two only with luck, depending on the filling level. A 7 cm federal file only fits if it is only half full.

No, the shoulder belts are fixed and there is no specific device to attach the backpack to a suitcase.

Yes, indoor shoes also fit in the compartment.