Apple's Start Page briefly listed a headline with the title Keynote '08. The title was quickly changed, but the name suggests that Apple could even skip the iWork/Keynote '07 version designation that was originally expected at Macworld San Francisco in January. Alternatively, this could be a simple typo.
Despite speculation that iWork (and iLife) may have been delayed due to Leopard, Apple has provided no information on when these software applications might be released.
Of note, remote control functionality works in the current version of Keynote (iWork '06).