From the Guardian:

A photograph believed to be an extremely rare image of Emily Dickinson has surfaced in her home town of Amherst, Massachusetts, showing a young woman in old-fashioned clothes, a tiny smile on her lips and a hand extended solicitously towards her friend.

The rest of the article is fascinating, especially the details of how they verified the facial features of the new photograph against the old photograph.  The official medical report, linked in the article, is incredible.  To quote it:

Other similar facial features are evident between the women in the daguerreotypes. The right earlobe is higher on both women. The inferonasal corneal light reflex suggests corneal curvature similarity, allowing us to speculate about similar astigmatism in the two women. Both women have a central hair cowlick. Finally, both women have a more prominent left nasolabial fold.

She needed glasses.