the precure serien in 2010

there are much high possibility of being on the air the next precure series.
the reason is to the next:
the japanese magazine "animege" says that the fresh precure is the beginning of the new precure series.
consequently.the precure series will be on the air at least next several years.

it is my idea:

the next precure series appears the same precure fighter as we see right now.
cure-peach
cure-berry
cure-pasiion
cure-pine

and plus we see the new precure fighter in the next year.
but who will become the 5th pecure fighter?
i can not tell.