Statistically speaking, somewhere between 4% and 8% of the HN population will be very interested in this news. I'll bet that's a bigger percentage than actually care about Erlang, and we're always hearing about that :-)
But seriously, there is no reason, other than it being a really nice piece of news that, as a member of a community, I would like to share with the rest of that community.
(And to clarify: I didn't post it, I just voted it up :-) )