Sir Keir's plans for the next phase of his government will include five detailed "missions".
When it is fully unveiled on Thursday, it will be designed to highlight which measures will be prioritised both politically and financially.
"[The milestones] will also ensure the attention and resources of government are focused relentlessly on delivering real and meaningful change," Sir Keir wrote.
For example, there exists a wide-ranging government mission to break down barriers to opportunity.
But under the new plan, a specific target will be created to help improve early years education.
Ministers will aim to increase the proportion of four-year-olds and five-year-olds who are fully ready to start school - socially as well as educationally - from 60% to 75%.
Other policies, from housebuilding to hospital waiting lists, will become priorities, too, under the plans to be announced by the prime minister on Thursday.
But by implication, it seems some previous pledges may be destined for the political slow lane.
The five headline missions do not specifically cover migration, but McFadden said it would be "mentioned" in a document, to be published on Thursday
However, he said there would not be a "numerical target" for the level of net migration arguing that the "exact number you need will always ebb and flow depending on the needs of the economy".
The Liberal Democrats' Cabinet Office spokesperson Sarah Olney said the government's targets would be "meaningless unless they reversed the disastrous mistakes made so far".
She said ministers should "swallow their pride" and ditch changes to the winter fuel payment and inheritance tax for farmers.