Charles2 has placed this on various sites,
From an email sent by Richard Franiec announcing the CG-DPMerrill grip:
Using and carrying DP Merrill cameras comfortably and with enhanced safety is now possible.
The finger groove was designed and tested to fit the hand in most natural way enhancing operation of control camera functions on the fly. For unobtrusive shooting, the grip covers the shining silver logo (a necessary extension of the grip).
The grip sits well below the retracted lens. It weighs around an ounce (35 grams). It is individually precision 3D CNC machined from high-grade aluminum alloy, glass-bead blasted and black-anodized with a nickel seal for durability.
The grip attaches to your DP Merrill by 3M VHB clear transfer tape, known for ultimate bonding power in a wide range of environments. Once mounted, the grip becomes an integral part of the cam, yet it can be removed without damage to the camera or the grip finish when the need arises.
The custom DP1/2Merrill grip will be available in the first part of December 2012 for $36.95 plus shipping.
Photos of the grip on the camerahttp://picasaweb.google.com/RichardFraniec/SIGMADPMERRILLGRIP?authkey=Gv1sRgCIOthpzp2qCeZg
This is as far as I can tell the upcoming grip requested above and below