PDF's are available at RPG.now - you can get the Screen/Character Sheets and Rulebook all for the princely sum of $3.50
Physical copies can be nabbed from +Peter Regan's website Squarehex.com - they'll be available pretty darn soon.
TBH now has a G+ community - already with 200+ members, plenty of resources and the opportunity to hurl profanity at me - what more could you ask for?
The lovely +Bruno Bord has kindly developed a reference document for all your Black Hack 'hacking needs.
The free supplement 'Additional Things' is being proofed, and should be out and available in a day or two (in PDF format - there's no plans for a print run.. yet)
So what's next? I've got some ideas, me and Peter will be conspiring over the coming weeks as to what our next move will be - but i'd love to hear from yourselves about the things you'd like to see produced to support 'The Hack.