I'm not sure what you're classifying as 'high HP trucks', but the Lightning is coming soon. If you meant specifically offroad trucks, the GMC Hummer is boasting to be an off-road 1000 HP truck. I would bet Rivian and Tesla coming out with trucks before RAM.
I get why you're looking at the R as playing catchup to the TRX, but I don't think RAM coming out with the TRX means that they have surpassed Ford in this market when it comes to experience, engineering, and understanding the market. I don't think RAM is going to jump to a hybrid in a TRX. Not without first bringing it to their base model trucks and understanding it. Basically, I think they will follow Fords lead on this and bring in hybrids/EVs as option rather then force their customers into it.
I get that GMC/Chevy is taking a different approaching with the Hummer, and maybe it will work out ok for them. No doubt thought that Ford will be better equipment to do hybrids and EVs from top to bottom than GMC/Chevy will.