Ah yah I see how that wording was confusing.
I personally feel 4 years seems long, but you brought up 10 for Dragons and since 93s came out with less dev time I'd assume DLX could push a truck to market faster. Either there's a slowdown from production or something else not related to the design and testing phase. That was my point- the Protos haven't changed since I first saw them and people were first testing them so it's not a matter of iterating on design. If there's still design issues it would be really odd for DLX and they'd never see the light of day so they're probably ramping everything on that side (plus Covid slowdown, factories, etc).
As for someone else that asked I dunno if T2 is the name. There were some pros from a major DLX brand in town relatively recently and only 1 had them. Didn't wanna be a douche and ask and he probably couldn't tell much, but they are notably different looking even from 10 feet away.
8 hole plates just a rumor, but lots of the DLX guys have them and my shop manager said they might be sold aftermarket soon like the Indy replacement plates. He could be wrong, but Ishod and a few others have been spotted on them according to the Venutre thread.