PS Looking at results of Betelgeuse observation, it seems that anything especially interesting in terms of neutrino and antineutrino flux still didn't come thence. We couldn't miss it, as at such relatively close distance neutrino generated by Betelgeuse would saturate our routine detectors with ease. So it looks like Betelgeuse is nowadays tame, burning helium. Carbon burning stage would take a few hundred years still; only neon & silicon burning become easily observable by our laymen time scale.

Not hypernova killer class distance, as in Diaspora by Greg Egan, but nonetheless pretty close.