“Is the 17-Inch MacBook rumor credible? It’s the most likely among the crop of rumors about tomorrow’s Apple announcements expected at Macworld Expo,” Joe Wilcox writes for eWeek. “The 17-inch MacBook Pro is most obvious among them and the most sensible, particularly if one rumored feature of the laptop is right: The fixed battery.”

“Apple’s ‘unibody’ enclosures are remarkably tough. The new aluminum 13-inch MacBook and 15-inch MacBook Pro are rugged like I’ve never seen in laptops of their class. Same can be said of the MacBook Air, which is surprisingly solid for a laptop measuring less than 1-inch thick,” Wilcox writes. “Apple could literally transform the 17-inch notebook category, if the unibody enclosure is done right. The fixed battery suggests that might be so. The Air also has a fixed battery, which let Apple produce an enclosed unit that is thinner and more structurally sound than what would be expected from an ultra-thin laptop.”

Wilcox writes, “The existing 17-inch MacBook Pro already is thinner and lighter than most—perhaps all—other notebooks in its class. But what if Apple could make the portable thinner still, which would be a huge differentiator among notebooks with the same size screen? So I wonder, could Apple be as audacious as to release a 17-inch MacBook Air, or something like it?”

“What if Apple could bring the thickness down to, say, .85 inches or .9 inches and trim the weight to 6 pounds, or less? Apple might have to sacrifice the built-in optical drive, as it does with the Air,” Wilcox writes. “But what a computer.”

Full article here.