Update: Sheesh I was late on this as it was originally noted around much earlier but I only found it when going through my newsgator updates.
Yes - it's likely due to older sat photos but doesn't that mean the date the photo was taken should be shown on both mapping software.
Wonder if anyone has checked out the Sun headquarters? At least that place looks like it's there on both Google and MSN.
Microsoft's Earth deletes Apple HQ | The Register