Although Eric Schmidt, the CEO of Google, already said that there won't be a follow up to the Nexus One, nothing is set in stone especially with the resurgent competition from Microsoft, HP (Palm) and RIM coming towards the end of the year.
As a reminder, there were rumours at the beginning of the year, shortly after the release of the handset, about an enterprise edition of the Nexus One, one which would be targeted at the corporate customers and would have included a physical keyboard, one which would indeed look like the HTC Vision, which is the HTC Desire (Nexus One) with a slideout keyboard.
However, six months later and we've still not seen any Google Nexus Two phone on the market and, there seems to be no impetus for Google to come out with one.
The real reason why Google launched GNO was to capture the imagination of manufacturers, geeks and the specialised press alike; GNO was in effect, a very strong statement from the search giant about what Android can achieve.
It did provide Android with a massive push and until now, the momentum is still with Google's mobile platform despite the new iPhone 4 and Microsoft Windows Phone 7.
The only major Android phone before GNO was the Motorola Droid/Milestone, one which was soundly outclassed, in every sense by Google's Nexus one in all but one sector; it did not have a keyboard.
So it would make sense for Google to launch a new GNO with a keyboard if there is a need for it. Whether it will be an enterprise-class handset remains to be seen as even Apple's iPhone has yet to crack the market.