NASA's New Horizons spacecraft finished returning data from the Pluto system, after the spectacular encounter in July of 2015. The pace of new discoveries has tailed off somewhat, but new results are still coming out in the scientific literature. NASA's web site is a great place to see what's new. The Charon pole paper can be downloaded here.
Order the new US postage stamp that finally replaces the "Pluto Not Yet Explored" stamp from 1991.
Observations of Kuiper belt binaries continue, aimed at substantially increasing the number with known orbits and masses, with a bunch of papers in the works. Some binary systems (Sila and Nunam and Manwë and Thorondor) are aligned such that they are currently doing mutual events - presenting opportunities to get more detailed information about these small Kuiper belt systems.
Lowell Observatory's new Discovery Channel Telescope is fully operational and hard at work making new scientific discoveries.
Using a new Raman spectrometer in the laboratory to study phase transitions in cryogenic ices.
New Horizons is on course to encounter the small Kuiper belt object 2014 MU69 on 2019 January 1.
NASA's Lucy mission will be launched in 2021 to explore Jupiter's swarms of Trojan asteroids.