I think people are always interested in what's happening at the cutting edge of the sport, even if it's at levels at which 99% of us will never climb.
I usually just report the new 8Cs on here because I think it's interesting to see how and where the cutting edge is being forced forwards.
That said, I'm quite happy for people to post news of whatever they've done here - it's an open forum and if somebody puts up a new V3 with awesome moves on it, then go ahead and post it - and it'll also then get put into the new problems database. At the end of the day, news of a new V3 is really of more interest to me because I can see myself actually getting out and doing it, whereas the latest V15 is purely academic for me at least.