I have no inside info.
But:
IMO it would be very foolish to pay the prices the WSOP chips are bringing on ebay.

Be VERY leery of error chips like the 25/100 pictured in another thread. Anyone can switch the inlays using an exacto knife.

I know a poker player that changes the inlays between hands at the poker tables.

IMO since the $5,000 and up are on ebay, Harrahs will not use them again. The WSOP has and will continue to be a cash cow for Harrahs, I'm sure they will figure out what to do with the chips.
"Cash Cow" was not meant in a derogatory manner. I see a lot more ways they could milk the cow, as I said they will figure it out.