There's an article on iDigitalTimes.com that appeared at 12:36 on Tuesday May 5,2015. It mentions Bethesda's E3 plans and the listing at the bottom of the page that says "roleplaying game". According to Tidux on twitter who has accurately leaked previous gaming news " #Fallout4 will be shown at #E3 and be released this year"

If you want to speculate about Fallout 4, use this thread: http://www.gamesas.com/topic/1517297-fallout-4-speculation-ideas-and-suggestions-254/

If you want to speculate about E3, use this thread: http://www.gamesas.com/topic/1516893-bethesdas-e3-conference-thread-4/