The rules, which I checked really carefully before a recent European flight, say that you can have knitting needles in cabin baggage now. I checked with the steward on the flight and he confirmed this. However, I wasn't allowed to take them on my return flight. I decided not to argue my case with the slightly grim looking security guy! Luckily, a friend picked them up from the information desk, as I'd (possibly foolishly) had a favourite pair.
Anyway, if you love to knit, just be aware that the rules aren't always applied properly so perhaps don't take special needles with you on flights.