It looks like they are going to price the Challenger between the Charger SRT8 and the 300SRT8, I can give you canadian pricing (we pay about 20% more even when you take the exchange into account, case in point -Z06 $67k in the US $94k in Canada) 300SRT8 is $53k Canadian (eh) loaded (little or no discount) and they are holding their value here (a good used 300SRT8 with under 5k, if you can find one is still getting $46k) and a charger SRT8 is $47k Canadian (I haven't seen a used one come up yet), so using that math the Challenger should be between $33k US and $38k US.
I am not sure about the US but it looks like all the Challengers selling here will be loaded up with options.
I may have Canadian pricing on the Camaro soon (I respect confidances so I will only post info and pricing when I am told it is okay to do so) as we have just been awarded a contract with GM in Oshawa.