uhm...but after the official release, does NEM can be traded directly with BTC?
no one know the answer to this question?

Hmm if am i right NEM will be trading on Poliniex after official launch
I believe major altcoin exchange Cryptsy will surely prepare NEM-BTC trading market.
where did you get this information? that would be awesome news
AFAIK Cryptsy implements just about any currency.
We need bter.com and btc38!
We need BTC China, Kraken, and CoinBase

And we'll probably have some of those, but as they say, there's a right time for everything.