Farming with friends will be a little bit more intimate once *gestures wildly* is over.
http://www.nintendoworldreport.com/news/56205/stardew-valley-updated-to-version-15-adds-local-co-op-among-features-and-fixes
A major update is now out for Stardew Valley that adds a host of new features.
The version 1.5 update is now available on the eShop and includes a local co-op play option to go along with the existing online play. New music, goals, community upgrades, and secrets are also included in the update.
Although a full console version changelog is not yet available, the PC version's 1.5 changelog can be viewed here (contains spoilers).