Yet more alleged cases for the Sony Xperia Z4 have leaked, this time including semi-transparent cases and flip cases. A separate rumor casts doubt on this and recent leaks about the Z4, saying that what we are seeing is merely a revamped Z3. Alleged cases for the Sony Xperia Z4 The smartphone would be called Sony Xperia Z3 Neo (similar to Sony Ericsson's Neo apparently) and it's slated for a launch in May/June. The real Xperia Z4 is said to be unveiled at IFA Berlin this September or perhaps in November. HTC recently unveiled one One M8s, upgrading its last year's model and Samsung usually releases revamped versions of its Galaxy S flagships (labeled LTE-A or Plus). So it's not without precedent, but it sounds like Sony may be going back to the two flagships a year schedule, except with a different naming scheme. Yes, the label on the pink cases states "For Sony Z4" though case makers are not exactly privy to what the company is planning beyond the dimensions and shape of its upcoming products. Source 1 Source...
Source: http://www.gsmarena.com/more_cases_for_the_xperia_z4_leak_or_is_it_the_xperia_z3_neo-news-11891.php