From the EU Playstation blog:
Another common piece of feedback is that you were unhappy with the lack of game add-on packs provided in the last PlayStation Plus update. In response, we have teamed up with Bethesda Softworks to make all of the Fallout 3 DLC available to Plus subscribers for free, as the release of Fallout: New Vegas draws tantalisingly near. Please be aware that these packs will be in the Plus section of PlayStation Store for one week only, from the following dates:
13 October
Fallout 3: Point Lookout
Fallout 3: Mothership Zeta
Fallout 3: Operation: Anchorage
20 October
Fallout 3: Broken Steel
Fallout 3: The Pitt
Another common piece of feedback is that you were unhappy with the lack of game add-on packs provided in the last PlayStation Plus update. In response, we have teamed up with Bethesda Softworks to make all of the Fallout 3 DLC available to Plus subscribers for free, as the release of Fallout: New Vegas draws tantalisingly near. Please be aware that these packs will be in the Plus section of PlayStation Store for one week only, from the following dates:
13 October
Fallout 3: Point Lookout
Fallout 3: Mothership Zeta
Fallout 3: Operation: Anchorage
20 October
Fallout 3: Broken Steel
Fallout 3: The Pitt