As published in the Sony Japanese webpage, the NEX-3 has been discontinued:-
http://www.sony.jp/ichigan/products/NEX-3A/
As the NEX-3 was first marketed just back to May of 2010, the product life time of it is only 10 months.
Nevertheless, my NEX-3 has served me well as a compact APS-C camera, more so for a large sensor HD continuous focusing movie camera as well as an APS-C K-mount EVIL.
Anyway, it is rumoured that the NEX-7 is coming. And it should have a built-in EVF if the following rumour is true:-
http://photorumors.com/2011/03/16/sony-nex-7-to-be-released-soon-no-full-frame-nex-camera-in-sight/
Let's see what will happen soon, or not.