According to this roadmap, Samsung's new device will have 4.99-inch full-HD (1080p) screen with 440ppi. It also reveals that this smartphone will be debuting in Q1 2013 and is being speculated to be either Samsung Galaxy S IV or the next device in the Note Series.
Samsung is also claiming that thanks to new material on the AMOLED screen, the new range of phones will be able to offer 25 percent power saving. It is noteworthy, that most smartphone manufacturers such as HTC, Huawei, Sony et al have already announced their full-HD contenders, so it is likely that Samsung's next flagship will too sport the same.
As of now, there is no official word in regards to Samsung Galaxy S IV or when this device might debut. However, of the numerous leaks that have been pouring from the last couple of months, the latest claimed that the Samsung Galaxy IV may come with a S-pen stylus, as seen in the Galaxy Note series, as Samsung looks to merge the Galaxy and Note series to come up with a "mega-flagship".
Other reports have indicated that the Galaxy S IV will indeed come with a 4.99-inch Super AMOLED display with 1920x1080 resolution, giving it a pixel density of 441ppi. Additionally, murmurs are that the next Samsung Android flagship will run on Android Jelly Bean 4.2 and feature a 2GHz quad-core Exynos processor and an 8-core GPU, alongside 2GB RAM. It is likely to be equipped with a 13-megapixel camera rear auto-focus camera and, at 9.2mm, be slightly thicker than the Galaxy S III.
At the recent CES, Samsung had unveiled its new Exynos 5 Octa processor, which is an eight-core SoC. Of course, we will have to wait for the company to officially announce this device to know for sure if any of these romours come true.