No, deb.torproject.org is not dead. It will continue to have one version of Tor - the latest stable binary. 0.3.1.9 is on it now.
But iry is correct, the LTS versions that get sent to Debian are delayed by usual process. (stretch is still on 0.2.9.12 and waiting for 0.2.9.14). iry has a good point that at least LTS should be hosted by TPO. LTS users should not be penalized (relative to latest stable users) by having an additional entity in the chain of trust (and additional delays).