The new announced Sony Alpha a7RII now finally available for pre-order online at B&H Photo Video, Amazon, and Adorama. According to B&H Photo Video, Sony a7RII will be shipping on July 28, 2015.
From B&H Photo Video:
Available for pre-order. Will begin shipping Tue, Jul 28 (Subject to availability)
And according B&H, Sony RX10 II will be shipping on July 21, 2015, RX100 IV will be shipping on July 2, 2015.