"Later this quarter a new Lumia device is anticipated to have hero status with a leading US carrier."
The Lumia 928 is expected to be a strong alternative to Nokia's current flagship, the 920, which is exclusively available from AT&T in the States. It is currently believed that the new handset will be equipped with a sizable 4.5" OLED screen and a dual-core Snapdragon processor clocked at 1.5 GHz, but all of that is yet to be confirmed.
In addition, Elop mentioned that the "hero" Lumia will mark the beginning of what's going to be a whole season of new product introductions. The company has been quite secretive lately, so we'll have to wait some more before we get any substantial information regarding its future endeavors.