Just posted a detailed explanation about BitCommoditiz and the http://www.bitcommoditiz.org/where-to-mine/ in the announce thread here :
https://bitcointalksearch.org/topic/announcement-bitcommoditiz-new-and-different-10-crypto-commodities-428931
Regarding your questions :
Pre-mine? : yes and no : approx 15k blocks where mined before the announce on bitcointalk, however all the code is public on GitHub since mid-novembre 2013 (anybody could mine since that very date). Is it really important ?
Instamine? : no
anything new? : oh yes ! Please read the announce thread. BitCommoditiz is the first attempt to corellate crypto coin to underlying assets in the real world.
Thanks for the link .