MBP: Back to School deal vs. Refurbished

I'm looking to get a MBP (not sure about 13 or 15 inch).

It's looking like the rumored update will be significant, so I should probably wait to buy that one.

The way I see it, I have a few options:

• New MBP, wait until refurbished
• Current MBP, refurbished
• Current MBP, back to school headphone deal

How long does it take for new MBPs to be available refurbished?

I assume the back to school deal will be over by the time the new MBPs are released. Is that true?

Any advice?