I know that this question has already got asked before, but it's pretty old and things have changed (probably).
Already in 2009 the news rumbled, that Debian was going to switch to Upstart. You were able to install it, but had to remove
$ aptitude show upstart $ > Conflicts: startup-tasks, system-services, sysvinit, upstart-compat-sysv, upstart-job
It appears like you can still install Upstart, as it is in the Debian packages.
So my question is, what's the status quo? Was there any development on this? Does Debian still use
sysvinit; did they switch to another system comparable to Upstart?