The experiments were made simpler with 3D printing, it allowed different shapes to be produced easily. But making pills in different shapes is quite doable without a 3D printer, and surface area to volume has been known to affect dissolution rate since... I don't know, the sixteenth century? Maybe earlier.
Just look at the pill all the way to the right. It's shaped like a Life Saver candy. That candy got its distinctive shape from limitations on the equipment which produced it - a pharmaceutical pill-making machine.
And pills come in only a few basic rounded shapes because it's rather difficult to get patients to swallow a large spiky pyramid. Plus dissolution rates have been manipulated for a very long time by altering the binding agents and coatings, so this "new" tech is not adding new capabilities either, except maybe individually printing pills for each patient.
There's no news here, it's just a retread of "on a computer" patents.