Yahoo's coverage is finally showing off, though this isn't the sort of content we expected. If you don't want to know the title of the song featured in the upcoming trailer, don't read any further. From Yahoo!...
"The new trailer is scored with "Arm In Arm (Shy Child Remix)" by New York City-based band The Boggs. The idea was to show a real street-level view of Rockstar's version of the city with a band that belongs there...
...While Rockstar is reluctant to discuss the details, time is a big factor in GTA IV. The new trailer indicates in subtle ways how the passage of time might affect the game, and there are clues that indicate some missions, or mission elements, might be time-specific."
You can listen to a different remix of the song on their Virb profile over here.
More: Yahoo! Games