From wikipedia's page on Occam's Razor:

Occam's razor (or Ockham's razor), entia non sunt multiplicanda praeter necessitatem (Latin, roughly translated as "entities must not be multiplied beyond necessity"), is the principle that can be popularly stated as "when you have two competing theories that make exactly the same predictions, the simpler one is the better."

In the light of that pearl of wisdom, consider Peter Schneider's post, from which I will make the following extract:

...we loaned 300 pre-production units to get more feedback from the community. This feedback is extremely important to us and as such we also want to provide the best user experience with the Nokia N900.

We expect it to start shipping during November 2009.

That looks like a simpler theory to me. HTH