Here' my 260 Rem Superlight w/20" barrel, the new style stock and forend are the cat's meow IMO, I have 3 rifles with them. Someone else will have to answer that, I haven't seen a new Superlight, so I don't know if any other H&Rs are coming with them or not, I've seen one Ilion 45-70 at Wholesale Sports that had the old style stock.
IG, I did have to trim the very tip of the hammer spur just a little to make clearance for the hammer to swing back, but it wasn't bad at all, here's a close up pic.
thx,
Tim