Samsung Galaxy S4 is speculated to kill the Note series as a rumour claimed that the device will be equipped with S-Pen stylus.

Korean website Enuri reported that Samsung Galaxy S3's successor would merge some of Galaxy S3 and Note 2's features and capabilities.

The report is looking forward in April for the launching of the new smartphone, which is a month earlier when the Galaxy S2 and Galaxy S3 were released in the previous years. There are also reports that the Samsung Galaxy S4 will be released in mid-2013 in line with the release of the rumoured Android 5.0 Key Lime Pie OS.

This rumour is backed up by a recent Reuters report that we could see the Samsung Galaxy S4, codenamed Project J, release sometime in April which is just under 4 months away.

Given the huge success of the Samsung Galaxy S3 and the Note 2, there are now rumors that Samsung may release a hybrid device. According to South Korean Media, the Samsung Galaxy S4 may boast a massive 5-inch display which throws it right into the phablet category.

It will also have a 13MP rear camera and the new EXYNOS 5440 quad-core processor. It will also be slightly thicker due to the 13MP camera and possibly a bigger battery.

Last week, a leaked video claimed that the upcoming Samsung Galaxy S4 will have an ultra-thin body and a laser keyboard.

In the video, the Galaxy S4 is presented as the GT-i9500, which makes logical sense, since the Galaxy S3 was the GT-i9300 (internationally). This depiction also shows off a device that is incredibly thin, looks a lot like the Galaxy S3, sports a 1080p AMOLED edge-to-edge display, 2.0GHz quad-core processor, 13MP camera, physical home button, and runs Android 5.0 (Key Lime Pie).

The idea of merging the Samsung Galaxy S3 and Note 2 may be due to the immense popularity and following of the devices. But the merger could also mean cutting on the profits that the successors of the two smartphones will bring.

However, Samsung kept mum on the rumours surrounding the upcoming Samsung Galaxy S4. There is no official comment from the South Korea's tech giant.