AppleInsider claims that an unproven yet credible source has told the publication that Apple intends to produce a Mac notebook with a build in 3G wireless module.
Although multiple PC manufacturers already implement 3G wireless modules into their laptops, AppleInsider believes that Apple could break the mould and build the chip into the display, decreasing electromagnetic interference and increasing signal strength.
It should be noted that 3G connectivity comes in several forms, but it is most like that Apple will use HSDPA as that is what AT&T currently use.