Clicking on the link to join the mailing list also pulls up a survey, asking if the player played either the first two games and what platform they'd prefer to play System Shock 3 on. However, the most intriguing question is one that asks on a scale of 1 to 10 on how much value they put in virtual reality, meaning there's a chance that System Shock 3 might have VR support.
Playing the game in VR is highly appropriate to the setting of System Shock, since not only would the horror science game be that much scarier in virtual first person, but virtual reality played a part in both games, especially the final level of the sequel, where the player traveled into a reality created by SHODAN. (It would have been virtual reality, but by then, SHODAN was using the ship to create a whole new reality, so technically, it was an altered reality, not virtual.)
Finally, clicking on the audio file had the demonic AI herself creating, "D-d-d-did you think I'd forgotten y-y-y-you, ins-s-s-sect?" It certainly sounds like the original actress, Terri Brosius, so veteran players may feel a sense of relief of not having to get used to a new SHODAN.
UPDATE: OtherSide has confirmed in a press release, that, yes, it is indeed Terri Brosius reprising her role as SHODAN: "On the updated teaser site today, fans can hear popular voice actress Terri Brosius (System Shock 1 & 2, Dishonored) reprise her role as the voice of SHODAN and see an early peek at the evolving ‘next generation’ look of the character by artist Robb Waters."