Andy from Plus XP got some hands on tome with Alien Isolation at EGX:
"The atmosphere for Alien: Isolation is good. Disgustingly good.
Loud, creepy, tense, and it turns out that one alien is more. I can assure you that people would have been crying deep inside themselves after playing the Alien: Isolation preview. It really pounds you into a catatonic state with its sheer will to incite tension.
To some degree, we receive absolution for the mess that Colonial Marines was, but I fear that other problems could grind Alien down into a game that ‘could have been’."