I heard that they are getting rid of ALL air cooled engines for the one out of the V-Rod in the next few years too.
That's not going to happen. The Revolution engine, although a great engine in it's own right, is too radical a change for most HD riders (as proven by their reletivly small market share) and would require major changes to the entire line of motorcycles. HD is not going to change everthing from frame design to wheels on every model. It would not be cost effective and if current sales are any indicator, would dramatcally reduce sales.
A much more likely change would be the introduction of liquid cooled heads for the current Big Twins. Something HD has already patented. Honestly, I thought they would be introduced for this year. I was wrong. I would expect any introduction of the liquid cooled heads to start slowley. Most likely starting with the touring models, where the cooling system can be easier to hide and the customers are more open to the idea of a cooler running engine.
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