The most awaited Windows Phone smartphone this year should be the Nokia EOS. According to @evleaks Twitter account, Nokia EOS will be released as Nokia Lumia 1020.
Therefore, Nokia EOS will be the first Nokia Windows Phone handset with four digits naming. So far, all Nokia Windows Phone handsets always have three digits naming, like Lumia 820 or Lumia 920. If the nomenclature really changes, Nokia may repeat its old naming system like Nokia 3310 or 3110.
One of the reasons to change the name is to avoid trademark issue. EOS code has been used by Canon for its SLR camera lineup. Nokia EOS or Nokia Lumia f1020 will be released on July 11th, 2013 in New York. One of the key-selling features is the PureView camera with 41 MP sensor resolution. It will compete with other camera phones like Samsung Galaxy S4 Zoom and Sony Honami.