what is the meaning of the "white-label-version" ?

"if yes, commercial or freeware <b>again</b>"
freeware <b>again</b>? when it happen?

It's a version without the branding. Where you can put your own logos and/or a name. And I said "freeware again" because C5 currently is freeware.

Andrew, sure it is, but I was asking for something like putting a form on your website where one can upload their logo and write the desired name, pay a certain amount and get a readily rebranded Concrete5.
I think more than a few people would be glad to support C5 with something like $30-$50 and save themselves some work.

We're MIT licensed, so you're free to do with concrete5 whatever you want, including white label it. If you want instructions on how to white label version 5.5, check out this how-to:

http://www.concrete5.org/documentation/how-tos/developers/white-lab...