The images are LORRI images; however, because of bandwidth constraints (about 1000bps), these are lower-resolution versions of the LORRI images for press and initial science work. e.g. a one-tenth-resolution image takes about 3 hours to download. See here for a description of the sequence of transmissions:

https://youtu.be/ymJRlUQfPfQ?t=586

EDIT: The full download of the gigabytes of data from the flyby will take 20 months to download.