Confirmed, if you also use the two servo pins, only pin 2 and 13 are available. And the analog pins A0 to A5, so also the I2C at A4,A5 is still available.
The analog pins can be used as normal digital pins, but no PWM of course. You can use the analog pins for led output or button input.
pinMode( A0, OUTPUT);
digitalWrite( A0, HIGH);