A number of patents have been given to Samsung and then published on the Korean patent information website, K.I.P.R.I.S. It is highly likely that these new patents are are for the new Galaxy S5.
One of the patents is specifically for improved one-handed functionality on larger smartphones. According to the patent, users will be able to choose which corner they want to use this function in. Users can also decide between functions such as apps, notifications, or favorite calls.
The second patent outlines a new music player interface, which is much more integrated with social media.
There is a lot of speculation about when the Galaxy S5 will be released, but the latest rumors suggest that it will be around the time of MWC this year.