The EOS M3 (announcement & more) will not be available in the US, only in EU and Asia.
The EOS M3 will be available from April 2015 with a RSP of £599.99/€769.99. Hands-on at Dpreview, Amateur Photographer, specification sheet. Sample pics here (scroll down). EOS M3 article at CPN, and another article at CPN.
Pre-order the EOS M3 at DigitalRev (ships internationally).
EOS M3 EOS MOVIE「Another Day」- Making of
EOS M3 EOS MOVIE「Another Day」- shot with the M3
Canon’s venture into the compact system market sees an update with the M3. Here Rod Lawton takes a look at what this small camera has to offer (Digital Camera World)
EOS M2 vs EOS M3