It is free to try, so you can decide for yourself.
I would suggest that it is a multi sample player only for now, so it probably fits the ROMpler definition best at this time. They announced a plan to release user loadable samples next year, so if that happens it could be considered a sampler.
It can load four sample parts in a preset, and do some morphing between parts 1 & 2, and/or 3 & 4. Plus there is apparently some type of proprietary re-synthesis going on under the hood, but the exact details are only hinted at.