I think that the MacBook and MacBook's will be updated soon, but not as soon as October 14. If Apple were really smart, they'd release them in time for christmas.
I would think October 14th is the latest otherwise the 4th quarter sales will be low as MBs and MBPs are both now outdated compared to the technology out there. Apple will want to get a wriggle on if they want to capitalise. The back to school promo ends tomorrow or something close to the date right? I would think they might want a couple of weeks to clear old stock then bring out new products Just a theory