Episodes will begin airing on on SciFi in July.
Season 3 picks up the storyline from the end of Season 2.
Filming starts Early April

The Cylons will have some internal turmoil of their own and perhaps find that they are more like humanity than they had believed.
A D'Anna Biers model will claim to be the Cylon God or leader, which leads to some factions developing in the Cylon culture. ([I]the one killed by Caprica Six?]
Lucy Lawless has signed to appear in ten episodes in Season 3.
Kara's "missing ovaries" will be a major plot point in Season 3.
Season 2 ending cliffhanger will probably include the decision over whether to stay and settle a viable planet (not Earth) that has been found by the fleet.
Chief Tyrol is alive through the end of season two, although he has little to do story-wise.