The video is almost 3 hours. I think they start the update talk at about 50:00.
Note that I caught at least one error in the transcript regarding ultimate generation. There will be a buff that gives 3 ultimate every second for 8 seconds. The transcript erroneously states that the buff will be 3 seconds.
*edit. I thought it was 1:40:00, but the champion system section starts at about 50 minutes in.