Bethesda was the first game company to begin their E3 announcements. Above is the whole show. Note it was hosted by X-Play alumni Morgan Webb and Adam Sessler. Below are just the trailers and game announcements.
James Baldwin has also organize a whole group of LitRPG and GameLit authors to discounted/Free books in their series for a convention and also just to promote their works. There are various time limits on the sales, most from expire 4/20/19, so get them quick.