While scientists (NOAA) had predicted that the next flip would begin from May 2013, the solar observation satellite Hinode found that the north pole of the sun had started flipping about a year earlier than expected. There was no noticeable change in the south pole.
Observations suggest that the global magnetic field of the Sun will become different from the normal bipolar configuration. If that trend continues, the north pole could complete its flip in May 2012 but create a four-pole magnetic structure in the sun, with two new poles created in the vicinity of the equator of our closest star.
Press release by Japanese researchers here..