Along with the announcement of new Sony RX1R II (B&H Photo Video), here are first reviews and image samples of Sony a7SII (Amazon, B&H Photo Video, Adorama).
Sony a7SII sample images:
Sony a7SII sample images at thephoblographer
Sony a7SII sample images at ePhotozine
Sony a7SII sample images at imaging-resource
Sony a7SII Reviews:
Sony a7SII field test review from Brian Smith
Sony a7SII review from Mark Galer
Sony a7SII Video Review from Tony Northrup: