Indeed excellent, thanks! TLDR: Yes! "Pluto at 3.8 kilometers per pixel (~630 pixels across disk)."

That's transmitted shortly after closest approach, but that won't be the highest resolution image taken. It's just the highest resolution where pluto still fits into the frame. The highest resolution images will just be of portions of Pluto. One will come in on the 15th, but I believe the rest won't be transmitted until September due to the slow uplink speed.