In stock at B&H Photo: the Sony FE 55mm f/1.8 Sonnar for A7R / A7.
I'm hoping to have it tomorrow for testing. If it’s as good or better than the razor sharp 35mm f/2.8 Sonnar, it should be a very satisfying lens. But every design is different.
Update: apparently sold out now, watch my gear page for stock status (updated every 20 minutes, button color shows at a glance).