As you may remember Sony recently announced two new MicroPhone for our Alpha cameras:
Sony ECM-S1 wireless streaming mic with multi interface shoe you can preorder it now for $419 at BHphoto, Adorama, FotoErhardt.
Sony ECM-W3 wireless mic you can preorder for $369 (or $469 with 2 mic) at BHphoto, Adorama, FotoErhardt.
Jeven Dovey tested the ECM-S1 and loved it: