Sprint has confirmed the incoming Google Nexus S 4G, the WiMAX-enabled version of the existing vanilla Android 2.3 Gingerbread smartphone. Spotted in a search of the Sprint site by an Engadget tipster - and since taken down - according to the blurb "the newest Sprint 4G smartphone" will allow users to "Experience Pure Google." That, it's suggested, will mean "fully integrated Google Voice" with "the same number for all your calls and get cool features like voicemail transcription, web calling and more." We're also expecting the usual Nexus S curved Super AMOLED display, 5-megapixel rear camera, front webcam and integrated NFC support. If Sprint's web team's premature confirmation is anything to go by, we could well be seeing the Nexus S 4G make its proper debut later in the week at CTIA 2011. Android Community will be there to bring back all the details.