According to a report in The Wall Street Journal by Jonathan Cheng and Sam Schechner (behind paywall), Samsung is considering a major leadership shake-up:
Samsung Electronics Co. is considering a major leadership shake-up, according to people familiar with the matter, part of an attempt to revive its fortunes after a difficult year that has hurt its profitability, market share and stock price.
As part of the shake-up, Samsung's mobile head may be replaced:
In one scenario under discussion, co-chief executive and mobile head J.K. Shin—who had presided over Samsung’s rapid ascent as well as its recent tumble in smartphones—could be moved out of his role overseeing the mobile division, these people said.
The report goes on to state that Samsung has sold about 40% fewer Galaxy S5 models than expected and that merchandise is piling up in warehouses.
Last month Samsung reported a nearly 50% drop in third-quarter profit, its mobile division squeezed by Apple at the high end and Chinese competitors like Xiaomi at the bottom end.