Apple will almost certainly announce a more affordable version of its popular iPhone, which is speculated to be the "5c." According to an article from Apps Gone Free, this might be bad news for Samsung, and push Apple to the number one handset maker.
A deal with China Mobile, the world's largest phone carrier (with over 400 million subscribers), combined with the 5c could gain Apple upwards of 20 percent more market share in China, bringing its total to 30 percent.
There are a lot of good arguments why Apple should release such a device. Its current handsets are too expensive for the developing world, which is where the majority is smartphone growth is occurring.