Most of these parts are now stable and won't change much more.
Johann is offering free printed parts for Mini Kossel:
But there's no such thing as a free lunch. If you want to receive a free kit, you must swear by your geek honor:
After giving away the 2 free kits, you may sell printed parts for any price you want.
If you're interested, please email johann@rocholl.net and let me know your favorite PLA color and mailing address. If you want to get your printed parts first, explain why you're more qualified than others to start giving away high quality printed parts soon.