Any Package Watchers in Debian?

[Hart Larry]

OK, 2nd inquiree:  Short of an at or chron job, are their good ways in Debian 
Squeeze for me to automaticly receive specific packages as they are updated? 
Sure I can subscribe in e-mail updates of bug-tracker, but really, as an 
example, as a new version of aria2c became available, I would like it to just 
install.  Without an at or chron job, please, can I easily do this?  Thanks so 
much in advance
Hart