Haha, yes! The Doctor can have an entire UNIT category in his cellphone contacts - Martha, Malcolm, Magambo (why do all his UNIT peeps have names beginning with M?).

And I mean, it's an episode called "Waters of Mars"! Water = ice = Ice Warriors, clearly. Though maybe interglobal warming has turned them into Water Warriors (which sounds kind of like a Captain Planet villain).

Also if we do get Ice Warriors, and if that means we get a Jamie and Victoria and/or Zoe namecheck, I will basically love Rusty forever. Sure, we got the one Jamie namecheck in "Tooth and Claw," but since he's one of my top 3 companions (the other two being Sarah Jane and Donna), I want more! ;_;