Yeah, I know HL3, L4D3 and Portal 3 didn't show up.
Look: I know this looks bad.
My Incredible Source states:
Gabe did get to Japan.
Gabe did have all three trailers on a USB drive.
Gabe got stuck in traffic, so he decided to walk the rest of the way.
Turns out: Gabe does not have a lot of stamina.
He ended up trading in the USB for a bus ride back the airport.
Gabe blames Nintendo for not assisting him.
All three titles will no longer be exclusive to Nitendo's platform.
All three titles have been delayed out of 2018 so Valve can de-potato them.
I am sorry for any misplaced hope and excitement I have caused.