With the clock ticking on tomorrow's unveiling of the Nexus One, it seems most of the focus has been on the hardware and plan details (see below). But looking at the Nexus One as just another Android phone that Google happens to sell is to miss its potential significance as a hardware platform for Google's increasingly popular software offerings. Specifically, the Nexus One could have big implications for Google Voice and Google Apps.
One of the ways that a Google-branded phone makes the most sense is as a platform for the company to expand the functionality and user base of Google Voice. With the Nexus One launch, we may see Google Voice open up to more users, and we might also see the introduction of long-awaited number portability to the service
via arstechnica.com