Those features (with the possible exception of iTunes tagging) have been around for a couple years on the Sirius Starmate receivers. I would doubt that you've missed much in the way of news hardware-wise.
I guess I should be more specific when I say "aftermarket devices". I ment XM-Ready aftermarket headunits that actually replace your car stereo. AFAIK, the tuners for those units on the XM side of the service can't do that. I know there are add-on units that can, like my SkiFi3 or MyFi. Ya, it kinda looks like Sirius radios can already do that through that control bus, but XM isn't that sophisticated.
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