Despite a MacBook., there are some indications of an impending update to the more pedestrian
The same Vietnamese Web site that purportedly now seemingly has a new MacBook in its hands, according to a video posted on YouTube (below). Specifications for the MacBook that appear in the video include an Intel 2.4GHz Core 2 Duo processor (updated from the current 2.26GHz chip) and Nvidia GeForce 320M graphics (updated from the aging Nvidia 9400M graphics silicon).
Note that those are the same chip upgrades that the aluminum 13-inch MacBook Pro got. The MacBook Pro is also offered with a slightly faster 2.66GHz Intel processor.
There is no indication about when or whether the updated MacBook might be available. But if the gent in the video is cracking open a sealed box--which appears to be the case--availability may not be too far off.