The video starts off with Luke holding a banana, while it's in his hand. He throws it away, and says "Hi, everyone. SMG4 here." Then Mario shows up for some reason. Luke then announces the highlights and updates to the channel as shown below.
Glitchy Boy Productions has been changed to the Glitch Productions, along with the new intro because they felt didn't do a good job in explaining of what exactly Glitchy Boy is.
It might be a reason for the changes as the old icon of Glitchy Boy itself resembles a Gameboy from Nintendo.
New series: Hitbox. The new live-action comedy focused around video games. Luke and Kevin will be involved in the new series by dressing up as videogames characters while going on action-packed adventures. It's expected to be released in monthly episodes, starting from September 21st, 2018.
The announcement of new (improved) merch, dubbed as SMG4 Merch Line. The new official merch releases on Sep 12.
Luke also did mention that he, Kevin, and a group of people had worked on another secret project for over a year but can't reveal it just yet.
A sneak peek of War of The Fat Italians (2018 Edition) has been revealed in the end. The trailer and comment suggestions will be open on Sep 19.