Photorumors is reporting that the Panasonic S shipped early and that some smaller retailers have them in stock already. Hopefully, the big three will follow soon.
Panasonic S1: B&H Photo / Amazon / Adorama
Panasonic S1R: B&H Photo / Amazon / Adorama
Panasonic 50mm f/1.4 S: B&H Photo / Amazon / Adorama
Panasonic 24-105mm f/4.0 S: B&H Photo / Amazon / Adorama
Panasonic 70-200mm f/4.0 S: B&H Photo / Amazon / Adorama
via Photorumors