Couldn't find a post about this already, sorry if it's a duplicate.
Just happened to browse bigbadtoystore.com and saw that the wedding castle set is available for pre-order, shipping in August.
They also have set of brides maids ponies and talking Princess Cadence.
There's something else too, that has no pictures and I've never heard of: "MLP Minis." It says there's a Wedding Set, a Cloudsdale set, and an Apple family set. Anyone know what those are?
Those are miniature sets that are to the same scale as blind bags I think. They have pics on the My Little Pony facebook page.
Apple family appears to be Applejack, Big MacIntosh, and Granny Smith.
Cloudsdale set is Rainbow Dash, Gilda, and a Wonderbolt.
Lastly, the wedding set is Cadance, Shining Armor and Twilight.
Even better yet, you can check out the "what's new" thread that is stickied. They have pictures of the new figurines there.