Back when Honda confirmed
Back when Honda confirmed they would be moving to turbo charged engines, they said "1.5 is the new 1.8."
They also touted the 1.5t would provide 15% better fuel economy and 45% better low end torque.
If Honda can deliver on that claim, the 1.5 would be the logical choice as they would probably start to drop in in every Civic, HRV, and possibly the 4 cylinder Accord.
I'd imagine the 2.0 is slated for a later release since the 1.5 is likely to take the lion's share of volume over the next few years without a Ridgeline release date on the horizon.