Earlier today, it was confirmed through the “trademark bot” Twitter account that Toei had trademarked names for two new Sentai series: Kaitou Sentai Lupinranger and Keisatsu Sentai Patoranger.
Lupinranger will likely be based on thieves and criminals (Kaitou roughly translates to Gentleman thief), Patoranger will almost definitely be another police themed series.
This is unusual as Toei usually trademarks one series at a time. This could just mean that they want to plan the next two years simultaneously or maybe one of these series would be a non-canon spin off (like Akibaranger). Another possibility is that there will be two series at the same time which would make some sense, considering the titles of the two series seem like opposites.
We’ll have more news on what this means for next year’s Sentai when it becomes available.