Photos have leaked today which appear to feature an official Apple-made Apple Watch charging dock, alongside the packaging for said product.
Published by grobgebloggt.de, the photos appear to give a clear picture (see what I did there?) of what to expect from this product. According to the images, the dock is circular with a magnetic charging connector for the Watch to charge flatly or while on it's side while in "Nightstand Mode". The dock connects to a lightning cable for power through a computer or wall adapter.
When Apple might release the magnetic charging dock is currently unknown. According to a sticker on the box, as seen in a separate photo, and assuming these images are real, it will retail for somewhere in the ballpark of $100.