I'm guessing by "turn" you mean when people say it's more about selling and getting out something every year. Before, tokusatsu was made when there was a story in place and it was most going to last a good amount of time. Some shows now are more about special effects and toys. Kabuto and Decade are excellent examples. On the outside, Kabuto looks like a decent show, but it lacks substance. Decade lacks everything good in the world. It was just made to have something out there for the anniversary of the Heisei era. It was special effect-driven and it lacked a proper story. It was a my-Rider-is-better-than-your-Rider show. Kabuto is shiny and it's very distracting to people who look for shiny things. The suits are sleek and the CGI is nice, but it falls short of accomplishing something. With Decade, there's all sorts of Ganbaride cards being sold with DecaDriver or whatever it's called and some other merchandise from the series.
People call something like that the "turn."