Heres an idea of the time line
A quote form the above website
These reforms to the immigration system will be backed up with a new single piece of legislation, replacing all existing immigration laws, which will be introduced to Parliament in November this year. This is designed to make immigration law more straightforward and transparent and make the UK's immigration system more effective.
So its introduced to parliment in november so may not be enacted for a while if there are lots of objections etc.
and a green paper is not one that glows in the dark or biodegradable but.
Green Papers are consultation documents produced by the Government. When a government department is considering introducing a new law, it will usually put together a discussion document called a Green Paper. The aim of this document is to allow people to debate the subject and give the department feedback on its suggestions.
