I believe you that the comment was there, but I can't find it. I don't think it makes any sense though... For one I believe the line that Hyundai hasn't finalized the options, let alone pricing (sure they have an idea, but I don't think they have the MSRP down to the hundreds). For them to be in the discussions stage and have someone do the coding to accidentally put it on the website would be silly, plus the full price V8 would likely only show if you "built it" on the website... otherwise you'd see the "starting at" price.
On to the actual price not making sense... They're stating firmly that the V6 will stay under $40k. A couple review sites predicted around $38k for the base V6, and I think that's reasonable. Remember that the base V6 will now include parts of what used to be the premium package, as well as new things standard (the Nav -- which when optioned separately on most cars is $1500+). Throw in the paddle shifters, etc. That makes the '14 to '15 markup rather reasonable at $1500-2000.
The change in pricing for the 5.0 should be smaller than the total change in pricing for the 3.8 because nav was always standard on the 5.0, but it's being added to the base price of the 3.8. So if the V6 goes up $3k total, I would expect the V8 to go up $2k or slightly less.
If the Hyundai
USA site had the 5.0 that expensive, then it was the rear-
wheel drive variant.... and since it certainly wasn't up on the "build it" page it didn't have the tech package either. That would put the AWD 5.0 with Tech at near $60k if they offered it. That would be dead-on pricing for an Audi A6 Prestige with a couple options on top of Prestige (full LED headlights anyone?). That supercharged V6 is severely under-rated and will run head-to-head with the 5.0 too.
Hyundai has stated several times from the very top that the Genesis and Equus cannot compete at the same pricepoint as the Germans or Japanese without a sub-brand, and that they'd rather offer them as low/medium volume halo because they boost brand perception and sales for cars in the mainstream brand segment. That requires that people buy them, which imo requires that they not be able to get an A6 Prestige for less than an AWD 5.0 Genesis.
Similarly if they did run the V6 all the way to $39,999 and then throw AWD on as a $2k option then they're only $1k short of an Acura TL-SH with tech for the V6 AWD model. That's hardly the difference to phrase as "that people can actually afford" from the Detroit launch.
Maybe I'm too optimistic, but again if we're talking mid $50's and removing some features from the '14 I'll just go get the Audi at $57 with AWD and be done with it. The TLX prototype didn't look too bad either -- the next gen is supposed to deliver a good bit more power with the hybrid powertrain too.