Just yesterday we reported that Sprint’s stores have reportedly received posters to advertise the upcoming Galaxy Nexus launch. Based on the rumors, we can expect to see the launch of the Galaxy Nexus on Sprint’s network come 22nd of April. Thanks to a leaked screenshot (courtesy of Android Life), it has been revealed that training for the Galaxy Nexus for Sprint’s customer service reps ends on the 22nd itself. This could suggest that the 22nd of April could be the day Sprint will officially launch the Galaxy Nexus alongside the LG Viper 4G, which has also been rumored to see a launch on the same day with pre-orders starting today. In any case, the 22nd of April seems to be a date to look forward to assuming the rumors were to pan out, what with the possibility of AT&T launching the HTC One XL, and Sprint with the Samsung Galaxy Nexus and LG Viper 4G LTE. Until we actually see or read about the launch ourselves, we will be taking this with a grain of salt for now and suggest you do the same.