This has been stated earlier in the thread, but the miner is a fork of an older version of cgminer with a rewritten kernel. It has been built for both AMD and NVIDIA cards, but it is likely that an optimized miner for NVIDIA cards will take a little finesse and a fork of ccminer. Testnet and miner binaries, alongside miner specifications will be released one week prior to the launch of mainnet. This is done in an effort to not produce mining information in all kinds of different ways across different platforms and to keep the process as fair as possible for everyone. The same information will be released to everyone in the same way. The focus right now is to get through the airdrop process and get that sorted for all the participants. Once that is done, the focus will shift toward the aforementioned binaries for testing and mining - which will then receive priority attention.