http://www.toei-anim.co.jp/tv/suite_precure/
Page updated around the new year. Shows off their civilian forms, which is kinda nice looking in my opinion. For some reason they look more realistic than the other Precure girls normally do.
Cure Melody is Houjou Hibiki (hou = north, hibiki = echo/rhythm)
Cure Rhythm is Minamino Kanade (minami = south, no = field, kanade = to play an instrument)
Want to bet there'll be a west and east Cures later on?
Oh, and the cat's name is Hammy
Kudou Mayu is doing the opening this time (La La La Suite Precure) and Ikeda Aya is doing the ending (Wonderful Powerful Music) So basically the girls switched roles from HeartCatch
Starts February 6 so that leaves 4 more episodes of HeartCatch I believe?
Edit:
http://asahi.co.jp/precure/suite_new/pre2516458.html
Some more info on this page. Their voice actress info
And their catch phrases:
ここで決めなきゃ女がすたる
The girl that can't decide right now will die out/go out of fashion
気合いのレシピみせてあげるわ
I'll show you the recipe for spirit