The poor and declining Windows Phone market share, the lack of any improvement over the last 5 years (a period in iOS and Androids life where they went from nothing to market dominance), and the persistent lack of apps or support from 3rd parties is not "rumors and gossip" at all.
There is plenty of hard evidence to suggest Windows Phone does not have promising future.
There is plenty of hard evidence to suggest Windows Phone does not have promising future.