Being webmaster of a CBR owners community site and having some Honda contacts here in Europe has allowed me to bring you a few first impressions of the 2007 CBR 600 RR stretching its legs 
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The new CBR is slimmer than the '06 model. Sitting on both the '06 and '07 the '07 will feel smaller between the legs. Seating position seems to be a bit more aggressive, but not as radical as the '06 R6.
Expect more power. Don't rely on the looks not being completely different from the previous model, because the changes seem to be in the heart. Let's just say that, in terms of power, down a straight, for instance, a stock '07 will give a race prepped 2005 CBR 600 RR a good run for its money. Some insiders even consider that, on completely stock trim, the '07 600 RR may have a slight edge on the '06 R6, so expect great races in the 600cc categories all over the World.
The undertail exhaust, even in stock form, is light. Aftermarket exhaust pipes will be lighter, but the stock one isn't as heavy as it looks.
Against all odds and usual prejudice for OEM steering dampers, the '07 600 RR steering damper - that should be installed hidden from view under the airbox/tank cover - actually works very well on a racetrack, which can only be good news to all of you who plan on taking this bike to a racetrack. One less thing to buy !
Suspension is still typical CBR style. Works fine for 90% of the common usage, but once pushed hard on a racetrack, it could use some aftermarket parts front and rear, in case people would like to race it seriously. But for the trackday fan, it should prove good enough and even give the amateur racer some serious fun.
No new functionality expected on the gauges, like a stopwatch or similar. Too bad it would be a nice addition 
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More info will be posted as we get closer and closer to the release of the bike to the dealers 
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Mario Sobral