Here is a summary from torhead.
PC-Gamer has a nice round up of what will be coming (how I found it) while torhead who did the datamining have a lot more detailed informationPatch 1.2 - Prepare to return to Corellia to battle each other for control over the Black Hole, scout the Lost Island, and head to the planet of Denova to battle it out against both the Republic and Empire.
Patch 1.3 - Discover the Legacy of the HK series of Assassin Droids, discover the horrors hiding deep within Belsavis, obtain Czerka Technology and aid Gree Droids as the mighty black bisector.
Patch 1.4 - Battle with the Hutts on their homeworld of Varl and take the fight directly to them.
Patch 1.5 - Trek to the ancient secret capital of Rakata Prime, do battle with a rogue Imperial Warlord and face off against The Dread Masters.
PC-Gamer: http://www.pcgamer.com/2012/02/03/star- ... -features/
Torhead: http://www.torhead.com/guide/leaks
Now, all this has been gathered trough datamining and I'm not quite sure where they got the version numbers from either, the MK droid companion used to be in the beta and was expected for retail afterall.
Still, it's nice to see Bioware have plenty planned, specially the amount of content delivered trough patches rather than expansion.