Lillies

Looks like Oriental lilies or Asiatic lilies (haven't figured out yet if those two names reference the same plants or if there are slight differences).

You will also probably get some additional sprouts that look a bit different. In fact, I think that picture has them also (the small single leaf-looking sprouts). Those are also the lilies but near as I can tell, they are the lily plants of younger bulbs, so they don't look quite like the older ones or make flowers yet. But in the next couple of years, they'll get more mature and will bloom also (so don't pull them out thinking that they are weeds or something undesirable)