According to The White Stripes website they have “completed mixing their sixth album,” entitled Icky Thump.

The sites goes on to provide additional information:

their first album to include a title track, which curiously (and not ironically) has the same words in it’s name. Though some residents of Northern England might almost recognize the title, The Stripes stress they are spelling it wrong intentionally just for “kicks” and “metaphors”, and to avoid a possible lawsuit from the estate of Billy Eckstine.