11th of June, 2014: For some unknown reason, the multiple types of bread teased in the past have randomly been appearing via Teleports in-game. It can be linked to the supposed 15 minute short plot - The Engineer conducts an experiment on Bread with some teleport, and something goes horribly wrong. The Bread models are identical to the ones shown in the Adult Swim and Two Cities updates.
11th of June, 2014: End of the Line creator, McVee, makes a vague tumblr post about Heavy and strawberries. With how 3 lines in the Short files correspond to Strawberries, it can be assumed that the 15 minute short is near to completion.
12th of June, 2014: McVee confirms the Bread short is complete, and that he's seen it - potential spoilers ahead - Chatlog 1, Chatlog 2.
17th of June, 2014: It begins. Furthermore, 2 links to certain pages regarding Lecture Valley result in 403 Forbidden errors, confirming that there'll be a Lecture Valley Update - Link 1, Link 2.http://www.reddit.com/r/tf2/comments/27xb98/regarding_the_importance_of_bread_and_what_lies/http://wiki.teamfortress.com/wiki/Lecture_Valley
In the advertisements, Mann Co. mentions a number of products that they will be releasing soon.
Eighteen Dollar Bread
50 Acres of Farm Land
Bag of Dolphin Meat
Mann Co Robot Disguise Kit
12-Step Mann Co. Piano Lessons
A Table Flipping Avoidance Course
Expect some of these to be included. Especially that bread. With bugs. that smells like fish and milk (Connection with the scout since it has holy mackerel and mad milk? who knows.)