Should I follow Season 3 or Season 2 for TC and SC?

I am following the Two-month plan and doing the TC and SC Sessions. I noticed that in the timetable we have season 2 of TC and SC. I noticed we also have a new season 3 for the same. Should I follow season 3 or should I continue with season 2? Is there any difference between the two? I took a glance at season 3 and it looked more structured (the slides).