Transformers Prime is a witness of new coined toy class names and one of them in anticipation is the Weaponizer class. Unsure still if it is a newly introduced class or just a rebrand of Voyager class?
From the sources added to the Transformers Facebook page today, we can find that the new shot of Bumblebee comes with new variation and it appears to be an all new mold.
Looks like they were pretty serious about adding firepower in the form of twin gatling guns to his shoulders. The image indicates a possible larger size and more complex transformation.
More to come, so do check out Transformers Facebook page.