Yeah, and in the linka tonywaouw provided it still says:
"NVIDIA is working on a full release of Ice Cream Sandwich (ICS) for our Tegra 2 Dual Core and Tegra 3 Quad Core reference devices to be made available early next year. This release package will comprise of binary code, drivers developed on our reference platforms and any patches necessary to ensure stability & performance with ICS. We hope the open source community can leverage this release for their work on all Tegra devices."
Exactly when, who knows, but probably soon enough.
Developer of GetRIL (XDA thread)
See your device's RIL and baseband version and download & install a new RIL even without on-the-fly!
HTC One X
ROM: CM 10.1 (official) or AOSP 4.2.2 - Thanks pabx, tbalden & Co
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CM 10.1 (official) - Thanks XpLoDWilD!
LG Optimus 2X
CM 10.1 (official) - Thanks Ricardo Cerqueira!