Why should he know what BR is? He doesn't work at Best Buy, he works for Apple. Apple hasn't even decided what format they're going to support and they certainly don't make MBPs with BR drives.
What made you think Apple was interested in HD DVD? Go to the Blu-ray Disk Association website and there is the Apple logo listed first. Go to the Macrumors thread here. An optional Blu-Ray disc drive s listed as an option. Burning 50 gb of data to a thin disk is very attractive to me.
Irregardless, why would you want a BR drive on a notebook? It's not like you're going to be able to write to blank BR discs anyway.. not in the near future at least and even if you could, can you imagine the cost impact of a slot-loading BR-R/W drive small enough that it doesn't dramatically affect the MBP's footprint. it'd be like twice the price!