"it will also gain a secondary type, which will grant it a combination that, as of Gen 6, has never been seen before (please do pay attention to the way I worded this line)"
As of Gen 6
Pay attention to how the line is worded
I'm assuming that means that it isn't one of the canon combinations up to Gen 6, but could still share a combo with another Pokemon from Se7en who also has a combo unused in the canon that we have been shown.