I saw one picture in a thematic group and my brain goes crazy with one of the possible translations of the text.
奏章プロローグ
An acquaintance translated this as the Prologue of the Notes or the Prologue of the Epistle.
If these are the same Notes I'm thinking of, then for me this is a real holiday, because maybe we will be shown not only Land of Steel and Ultimate Ones, but maybe we will see Type-Moon himself!