Hey Tom,
I believe the tubes on the sides of the cylinders are for cooling water. The photo of the assembled engine shows polyurethane tubing attached to these, so there is no steam going through them.
The video of the older WHE with a plexiglass top cover shows lots of water being poured into the center of the crankcase. Thus, the WHE has no oil pump, it just has an auxiliary water lube pump.
The wrist pins are vertical and hollow. I imagine they pass this water inlet on each stroke and this provides the "lubrication" to the wrist pin bearing.
Why not update the photo on the website? Well, according to the 10K, the first item on their business plan is to generate revenue with engine development fees and engineering services. If word gets out that they gave up on their own engineering work and subcontracted everything to OSU, who's going to pay them development fees?