Debian based distro that comes with up to date and new sofware

You can try Siduction which is based upon debian sid, one of the mods here is a core member of the dev team for that distro.

The stability of debian is based upon their conservative approach to software, they take a while to test software before pushing the updates which is why they are known for their stability. Up-to-date software will only limit the stability.

I did check distrowatch for debian testing based distros at (http://distrowatch.com/search.php?ostype=All&category=All&origin=All&basedon=Debian+(Testing)&notbasedon=None&desktop=All&architecture=All&status=Active) and found that antix and pardus are based off of debian testing, I have heard good things about both of those but have not tested them myself.

SparkyLinux
Kali Linux (formerly known as BackTrack)
antiX
PureOS and PureOSlight
Parsix GNU/Linux
Pardus Linux
Window Maker Live
Webconverger is a live, Debian-based web kiosk
Finnix
SolydX and SolydK
Grml is a bootable CD (live CD) based on Debian GNU/Linux
Epidemic GNU/Linux
LinEx
Swecha LiveCD
DistroWatch.com search for distros based on Debian Testing