I'm really happy that the game will be in first person, because I vastly prefer that to TP and I think it's vastly superior. Some of the best games and RPGs are in FP. Games like Half Life, Deus Ex, System Shock 2.. as far as immersion go, nothing really compares to them. And some people here have stated that you can't do stealth and melee combat properly, which is total nonsense because there are Thief series (best stealth titles) and DMoMM (amazing FP melee combat). Not even gonna comment on that dude who claims that you can't do RPG in FPP..
It's really childish to whine and badmouth a developer just because you're not willing to give something, that you're not used to, a chance. I would prefer for Witcher to be in the first person, but I'm not going to whine about that- I choose to play it regardless. And even if CDPR decides to implement some TP mode, don't expect it to be for combat as well, because the journalist describe combat as visceral, tons of stuff is happening.. so how do you expect all that to be properly animated and look good in TP? At most, they can add TPP while walking and exploring, and I have nothing against that as long as FPP isn't compromised in any way.
So CDPR, please stay true to your vision and you will make the best game possible. I can't wait to see some gameplay.