@sundberg84 thanks for the nice design!
I was not really aware of 'official' and 'unofficial' version (and version at all..) so just after the post of ar91 I followed the link to dirtypcbs and ordered 10 Rev6 boards. I will share my experiences here as soon as they arrive and see if it is worth while to order the rev8's. I like it that it is even smaller withour loosing functionality.