I'm not sure about that as well... but last time
I am... was on the chart before the release date as well (the release date was Jan 01), so I assumed this one should be the same.
quite off-topic... Kumi has two new singles on the daily single chart..
Shake It Up and
Lies.. I have no idea why Lies is on the chart as well, consider it's next week single (2006.01.04)...
Anywayz, I'm happy....