You can compile Sniff programs on a Mac or Linux machine, and run them on the EV3. There's also a little menu program which is written for the Lego VM(lms2012) which allows you to run installed Sniff programs directly from the EV3's onscreen controls. It's especially sweet that a big part of that is written in Sniff, so you can improve it!
There'll be a full blog post later today with a step by step explanation of working with Sniff on the EV3, including installing the onscreen menus.
The EV3 device support in this release only includes the screen and keypad/led's, but we'll be adding support for motors and sensors as soon as possible.
This release also includes the Studuino support we've previously posted about.