What features are not in the current iMacs?

I want to get a new iMac, but might wait until the next refresh. Curious though, besides a retina display and CD/BLU Ray, are there any other current mainstream technologies, or upcoming ones that are missing from the current gen iMacs?
Thanks.

seventy one wrote:
MlchaelLAX wrote:
You say this as if Apple had a choice in the elimination of Rosetta in Lion, and now Mt. Lion.
When Lion and Mountain Lion were launched , one of the reasons given for the loss of Rosetta facility was that the technology of the new items was incompatible with that of the Lion family.    So we have to assume it was a decision by Apple not to renew the licence on those grounds.
T&C (new unexplained pop-ups ) prevent deeper speculation, and even this contribution may be cautioned.
Your first sentence is a non-sequiter so there is no point to rebut that Apple had no option to renew the license...
Your last sentence does not even rise up to the status of a non-sequiter; it just seems incomprehensible!

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