Does anyone know what year the Severne RDM 100's, RDM 90's etc were first introduced / available for sale? I think its' 2014, and previous to that they were Redlines (for RDM 100), Bluelines (for RDM 90) etc up till 2013? I'm not sure though. Can someone confirm or correct this please. As of more recently the names have changed again to RDM Red (100% carbon), RDM Blue (less carbon) etc.

I bought " RDM Blue" new in 2017-18 ish.... so maybe there's a third nomenclature?

They're up to three or more. And please use words us lay people can understand. I had to look that one up.