Jonathan Frakes has just tweeted this picture on his twitter page…
This new phaser is a close match to the Star Trek TOS Type II Hand Phaser and looks a bit different from Star Trek TOS Cage Phaser.
Brass accents on the trigger, muzzle, and four heat sink fins on the back of the phaser highlight a black and silver matte body. Also seen are some of the same features and knobs as the original design, such as the circular control on the side and an intensity dial on the top. The grip is much more modernized than the old design, with an ergonomic pistol grip, and more complex styling that melds nicely into the top half of the phaser, rather than a simple black handle
And also this from Comic-Con which reveals the Starfleet rifle..