It would be the "the preamble" that implies a plan of action and lists certain things to be changed, since the introduction is far more general in exclaiming why in fact they are claiming independence.
The Confiscation Acts themselves did not do much but laid the legal and social groundwork for the Emancipation Proclamation which would come in the following year.
Lincoln was able to capitalize on the reaction to the Confiscation Act to feel comfortable enough to push forward the Emancipation Proclamation, which applied to all slaves in rebel held territory.
