of course, and most likely ltc or nvc. however, most miners are going to be converting their mined altcoins over to btc pretty rapidly (at least for the first few months), causing the market to be flooded with both of these, and their value to go down. good time to buy in for the long term when that happens.
Current markets are already "flooded" by current miners. can't see why there will be much difference between now and then.
And remember, coin generation rate is constant (true for ltc, not sure about nvc), no matter how many miners are in the game.