Thanks for the release.
However, I don't think it's the right thing to do to make solo miners mine by default to an address owned by you, unless they pay attention to the documentation and add the --btc-address option.
Some people like me mine solo even if they have a low hashing power. They do so because pool mining wouldn't provide a significant income, and they rather take their chance with the solo mining lottery. You shouldn't assume that somebody doing solo mining has millions worth of equipment so if they don't pay attention to your documentation it's only fair to punish them by ripping them off of their mining.
In any case, simply upgrading a piece of software shouldn't require the user to add an option in order to keep the previous behaviour. And in this case the change in behaviour is quite dramatic: all mining will go to your address instead of the one belonging to the user!
This is a bad default because it is most likely not what a user would want to do by default, and the most sensible default behaviour should be for cgminer to refuse to start and print an error.
The problem here is that obviously there are money involved, and I think this really reflects negatively on your reputation and the reputation of cgminer.
The fact that a piece of software is given away for free doesn't mean that the developer doesn't have to behave professionally and treat his users with respect.
Other high profile open source software like Linux or Apache certainly would never do anything like that.