The first one is the Samsung Wave 578, a phone announced in February. It should be released in June, featuring Bada 1.1, a 3.2 inch WQVGA display, HSDPA (3.2Mbps), Wi-Fi, Bluetooth 3.0, and a 3MP camera.
The other two new Bada phones don't have names yet. One of them should be out in September, featuring a 3.65 inch HVGA display, HSDPA (7.2Mbps), Wi-Fi,Bluetooth 3.0, 5MP camera, and VGA front-facing camera. The second one will be released in November, coming with a 3.14 inch QVGA display.
In other Bada news, Samsung has recently launched a Hello Kitty edition of the Wave 575 in France.
Source
