He says "Tiberius." Sibilants like T and S can be ambiguous especially when string together (like in JameS Tiberius). I also cannot wait to watch this movie. There are a few continuity holes (most of the original series' Enterprise crew would not have been serving under Christopher Pike, especially Chekov), but then, there have always been continuity holes in Star Trek (like Chekov recognizing Khan Singh in The Wrath of Khan). It looks like it will stand well on its own. And I disagree with KieranMullen: they've captured the look and feel of the original series very well, just updated it.

Star Trek
Trailer
(2:12)