ibob - Yeah, I was surprised too. I am looking for a new modern steel hardtail frame and short listed the Prestige and R8. Except for 2.4kg/ 5.3 lbs with seat clamp at probikeshop dot com, I couldn't find any weights for the Orange R8. 2.4 kg seemed a bit high, so I thought I would ask the bike shop to double check it and it is pretty close.
It could be due to the new CEN standard; I don't know. At the end of the day, the R8 is probably a great frame and a few extra grams won't make a huge difference. I just wish Orange would provide some weight information.