From another news article:
"Furthermore, a source from the mobile phone industry revealed that Samsung tried to hide its lack of innovation by bringing the Galaxy S5 to Barcelona."
“Actually, there is a general consensus among Samsung employees about a lack of product innovation, even before the Galaxy S5 was revealed,” the person said. “To the best of my knowledge, Samsung decided to showcase the new model at MWC 2014, rather than through a separate Unpacked event, because it was much easier to divert attention away from the innovation problem.”