Q,
your link appears to lead to a signup page for that forum....
this page on APC has a summary that might provide some of the info...
http://www.airlinepilotcentral.com/airlines/legacy/delta.html
Hiring is being driven by the delivery of the 717s from WN which will enter service in the next few months and the 737-900ERs which may or may not become growth aircraft.
DL's marketing exec for Asia recently said that a small top up order for widebodies should be announced in the near future, validating rumors that have been around for a year or more with those rumors seeming to favor the newest and longest range versions of the A330-200.