Apple has announced it will host an event next week, and the word of the day is “notebooks.” Both its MacBook and MacBook Pro lines are about due for some body design tweaks and more powerful engines. Rumors have been running rampant all over the Web for weeks. The latest claims that Apple will introduce a new $800 MacBook. The $800 price point — a $300 drop from the lowest-end existing MacBook — is still a rumor, born out of some purported price sheets that Apple may or may not have sent to its retailers.