According to a post at ContainsModeratePeril.com, Lord of the Rings Online players aren't going to be treated to any new dungeons in the near future, as a part of the design team's dedication to revisiting the existing world in 2014. Compiled from a chat script, Community Manager Sapience confirmed the rumor and further confirmed that no server merges are planned at this time.
That does not however mean there's no new content being added to LotRO in the future. The story reported elsewhere seems to be taken out of context, when for more information on what Turbine's 2014 for LotRO looks like, you need only see Katie Paiz' post on the official forums.
There's plenty of bread left in Frodo's lembas bag, folks.