Customer Service people are low-wage idiots that are at the very bottom of the information chain. They get news on a need-to-know basis, which means they get it on a need-to-sell-next-week basis. Carriers and stores can't afford to spend hours if not days every week on educating their highly expendable and extremely badly paid sales force about the finer points of hardware roadmaps.
That's why a customer rep will tell you anything he/she believes will make you either go away or buy a new phone on the spot, depending on how they feel that day and on whether they're getting bonus payments for selling a certain model. They don't know what they're gonna sell in a month; they do know what they're selling NOW, and that's incidentally also what and when they want to sell.
I never understood this drive to elevate 19-year-old part-timing kids earning 8 dollars an hour hocking telephones to gurus who are somehow expected to know the roadmap of all major and minor smartphone manufacturers for months in advance when in reality, a lot of stuff doesn't even come by roadmap. Oh hey, I haven't seen the iPhone5 on any roadmap for the next year! I suppose that means there won't ever be one!!
Store clerks don't know crap. Don't make the mistake of thinking they do. If they did, they wouldn't be working as store clerks.
Even middle management doesn't know about 'strategic' stuff like what's gonna be released two months down the road. Middle management only knows that they have to raise revenue by X% this quarter if they want to receive a bonus - which is why they tell the clerks to just sell whatever is on the shelves now instead of doing a silly thing like telling a customer to come back in two months... because the customer is liable to just go to another store next week where the clerk WILL try to sell whatever is on the shelf now.
Anything a store clerk says you can happily discard as useless garbage as, if you're a regular reader of this site and engadget, you have a 75% chance of knowing more than the clerk does, and a 0% chance of receiving anything that could be interpreted as 'inside information' by any definition of the phrase - simply because they're so far out in the periphery of the store's / carrier's organization as to not even properly being 'in' it anymore.
'Inside information' is only ever valuable AT ALL if it comes from a corporate level equal to or higher than a regional manager, product manager or project manager - depending on the type of company, product or service you want inside information from or about.
A general rule of thumb: an employee has a chance of being in possession of interesting information if his skills, experience and brainpower make him so valuable to his organization that he simply CANNOT be fired at moments notice because it would be difficult to adequately replace him in the short term.
Store clerks, in this sense, can't even be properly counted as employees - they're more like a type of fruit because they grow on trees.