While on stage with Walter Mossberg, Andy Rubin, VP of Engineering at Google, has brought up the possibility of an enterprise phone, which might bear similarities to the Nexus One. The Nexus One is apparently the first in a series, so the enterprise version might have a physical keyboard, and a larger battery. When asked about the possibility of a smaller phone, Rubin did give a half-nod, but that’s as much as anybody got. It certainly seems to indicate that the Nexus One won’t be the only phone that Google will be offering in the near future, so let’s keep an eye on it, and see what other cool phones Google will come up with next, eh?