TeenLeigh asks, "So, any guesses as to what the remaining Horcruxes are?"

The word is, "IS." Dumbledore told us the first six.
Riddle's diary, Slytherin's ring, Slytherin's locket, Hufflepuff's badger cup, Nagini and Voldemort himself.

As discussed in other threads, only the last one is in dispute. It could be a personal possession of Ravenclaw or Griffindor. It could be Riddle's trophy. It could be something none of us have guessed. The only thing it could not be is Harry.