Incidently, I like that the class requires ability qualifications and that a technomage cannot have anything to do with telepathy. It fits the books and shows that they are an elite order in that they won't just take anyone. The notes on the races are a good addition (I like that a minbari can be one, if rare, though never from the warrior caste). I like the acknowledgement of certain races for a predeliction for chaos or that only vertebrates can be one.
But one of the best things about the class, in addition to the no telepath thing, is that a multiclass technomage cannot have more combined levels in any other classes than technomage. If the forthcoming ranger class has the same requirement, which I think it will, then this will prevent not only telepathic technomages and rangers (because the ranger prestige class encourages a restriction on telepathy as well), but ranger technomages, which is a good thing; all three should be separate classes IMHO, though I suppose a latent telepath ranger would be okay (But then we won't see that class for a while yet).