We expect that most major OEMs release a flagship every year. And every time a consumer would buy the current flagship, there's always that unacknowledged fear that next year's new flagship might be better (as it should be right?) and so you might be "wasting" money buying the current one. The latest smartphone to present this dillema to its consumers is Sony which just announced its new flagship, the Xperia Z4, coming this summer. So should Xperia Z3 owners panic now and get ready to trade up?