Once again, Minor Planet Mailing List has the scoop. Two ~100km bodies orbiting in the same plane as Charon and at 23rd magnitude found via the Hubble Space Telescope. Good thing we haven't dumped it in the ocean yet.
IAU official announcement
This image from Alan Stern (SwRI), Hal Weaver (JHU APL), Max Mutchler (STScI), Andrew Steffl (SwRI), Bill Merline (SwRI), Marc Buie (Lowell Observatory), John Spencer (SwRI), Eliot Young (SwRI), and Leslie Young (SwRI).
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