No official date has been announced yet, but you can expect the TokenNet to launch somewhere after October 9. An extract from the latest newsletter:
Just forgot that we have the launch in October, I had some coins from the bounty and would be great if you can assist me of swapping it if possible.So during the token launch, do we even have the list of exchanges to list boscoin except for hitbtc?
The BOScoins you have been awarded from the bounty are stored in your dashboard and could most probably be transfered automatically to your web wallet once you create it. If the transfer has to be done manually, you will receive instructions on how to do so.
Along with the TokenNet launch, the team will also announce on which exchanges BOScoin will be listed on. They are currently still contacting various exchanges.
Keep an eye out for more updates in the near future. The TokenNet launch is not far off now, so more information will be shared in the next few days and weeks.