Michelin introduced their new Protek Max inner tubes, which use a novel surface to supposedly be both puncture resistant and also to minimize air loss due to punctures - they say the tube material is under compression rather than tension. There's also some sealant built into the tube.
This video is not in English, but there's some good footage of the new tube design and a demonstration of how the tube shape behaves inside the tire.
Interestingly, Pittsburgh bike blog Chicka-blog also posted about inner tubes today, with a slightly different perspective.
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