According to two different online vendors, the picture of the Rebel that Pentair shows on their website is first gen (I emailed both of them this morning, and they both answered quickly). Pentair now sells a newer model, version 2, which is what the online vendors are advertising, and showing pictures of. I have no idea if this v2 is actually improved, or in some way is of lower quality/enhanced profit, which is so prevalent in our society these days.
Typically, it's been my experience that Pentair improves their products, later models fixing things wrong with older models. And this site has some anecdotal evidence of that as well. So I'm not slamming Pentair in this regard, just cautioning, 'cause ya never really know with a new product.
As near as I can make out: model # 360473 is the entire kit: head, hose, adapters, etc. Model # 360486 is just the head unit.
Model # 360486 is version 2.
Model # 360275 is version 1. (Though I'm not clear on if 360275 is the entire kit number, or just the head unit number.)
Anywho, I think this is the latest model (but not the one I am vouching for. I've only used the older v1 model).

I'd still recommend the Rebel, but I'd advise only buying from a vendor with a good return policy. AZPools seems to have the best price on the head, maybe check them out for their whole kit price. I can't yet vouch for AZPools, nor their return policy. I'll be looking into that next...