Er... in case you were wondering... yes, this is the time of the year (September) when I usually do something to celebrate the anniversary of Befunge-93. It's 21 years old now, so if it were a person, it could drink legally in the United States, and, basically, it would be tried as an adult in pretty much any court in the world.
BefOS is a bit younger (but it would still be old enough to, what, drive?), but, in answer to your unspoken question, no, updating BefOS was not what I was planning to do for Befunge-93's birthday. It's only tangentially related.
In fact, I've been working on cleaning up the Befunge-93 (and Maentwrog and RUBE reference distributions — making their implementations compile cleanly on multiple platforms (Linux, NetBSD, FreeDOS, and AmigaDOS 1.3.)
But that's all not quite done yet; hopefully the Befunge-93 distribution will have a few more surprises in it before the end of the year.
But before you bemoan the barbarity of Befunge's birthday bash being a bit belated, ... well, nothing really, I just wanted to get some alliteration out of my system there. Have fun with BefOS.