Nothing on his blog seems to indicate any 'real important stuff'. Is he getting trolled?
He's Eric S. Raymond (widely known as ESR)[1], a major contributor to and early public advocate of the open-source community[2], originator and maintainer of much enduring 80s and 90s hacker humour[3], sometimes shit-disturber[4], and libertarian borderline crank[5]. [1] http://en.wikipedia.org/wiki/Eric_S._Raymond [2] http://catb.org/esr/writings/homesteading/cathedral-bazaar/ [3] http://catb.org/jargon/ [4] http://…
And I don't see anything in his recent posts that would lead Knuth to conclude that he's 'doing lots of real important stuff'. The language alone sounds odd.
I still think its possible that someone is just trolling him - and certainly while he seems starstruck to receive a mail from Knuth's secretary - he's boasted before about receiving emails from Knuth.