The latest round of reports have Samsung’s Galaxy S3 successor coming to market this April, following an unveiling at a March “Unpacked” event in the United States.

Firstly, Korean news outlet Asian Economies reports via “telecommunications industry” sources that Samsung is planning to unveil the Galaxy S4 at an "Unpacked" event in the U.S. in late March. Specifically, Friday, March 22 was highlighted as a likely date for Samsung Mobile Unpacked 2013, which is said to be the largest such event yet. If accurate, it’d be the first major Unpacked event in the U.S. since the original Galaxy S made its debut in 2010.

News of a possible Galaxy S4 unveiling this March, also fits with the second report we’re seeing today, which comes via Samsung fansite SamMobile. SamMobile’s sources have a pretty consistent track record in revealing details of pre-release Samsung handsets, and today the site claims that the Galaxy S4 is on track for launch sometime in April.

The S4, supposedly known internally by the codename “Altius,” is said to come in black and white color options initially. It’s reported that current shipping timetables call for the device to become available from week 15 of this year -- that's the week commencing April 15. Other information reported by SamMobile includes details of the phone’s battery -- allegedly a 2600mAh unit -- and apparent confirmation of earlier rumors of an optional wireless charging back. This accessory is to be sold separately within "a couple of weeks” of the S4’s launch, the site claims. (That’d be an improvement on the lag time of several months for official Galaxy phone accessories in years past.)

It’s worth taking reports of this nature with a pretty major pinch of salt until the official confirmation arrives. Nevertheless, the more reliable Galaxy S4 rumors seem to be crystallizing around a late Q1 or early Q2 launch window. A stateside unveiling would certainly make sense for Samsung, given the importance of the U.S. market. What’s more, an Unpacked event less than a month after Mobile World Congress would minimize the amount of breathing space given to Android rivals like HTC, which is expected to use MWC to unveil its major 2013 handsets. Keep it locked to Android Central in the months ahead -- it’s going to be a crazy year, and things are just getting started.

Source: Asian Economies via PhoneArena; SamMobile