Given that Ivy Bridge can handle a max of 32 GB of RAM, I would like to have a 2 x 16 GB setup even though I am not even using the 8 GB I have now in my 2011 Mac mini. If a 32 GB option were available for the Mac mini and 15" MacBook Pro, I can only imagine what Apple would charge for it.
When you consider that it can take up to 16 GB of RAM, has a quad-core processor with using hyper-threading with 4 physical cores and 4 virtual ones for a total of 8, I wouldn't doubt it.Graphics do need an improvement though and I see good things coming ahead with Haswell and Rockwell depending on the computer's future.
Agreed with this although I am curious as to why there is no discrete option in the 13" rMBP and I hope that changes in future models though it probably won't. Perhaps it won't need to with graphics improving.