Office 2010 has be noted as a “hybridization” of applications. It’s available on your PC, in a web browser *Office Web Apps”, and in Windows Mobile as Office Mobile. Currently, only the Office Web Apps are available; but to a select group.
According to the Wzor website, Office 2010 build 14.0.4514.1009 will be the build Microsoft will officially release as Beta 2 to attendees of the Tech-Ed Conference in Berlin, November 6, 2009.
Among things, this build features a new installation procedure, which requires you to enter a unique installation product key. Bad news for pirates.