Beginning in 2015 all new wood burning appliances must be EPA certified. They are already expensive enough.
Some industry insider information...
The new EPA regs that kick in for 2015 are only a starting point. If you read the actual language, all of the woodburners (even the phase 2 qualified ones) will be illegal to manufacture and sell in about a five year time frame.
The industry will not have any viable test standards for qualifying their stoves since the standards are concocted by a bureaucracy and are not based on any scientific facts.