What the difference between full research paper and WIP? Recently, I have got a notification from a conference saying that my research paper has been accepted to be published in LNCS proceedings as Work-in-progress paper. Therefore, I am asking if there any differences between WIP or full research paper when it becomes to be public and available online. 

Will the reader differentiate whether the paper is a full research paper or work-in-progress paper? also, will the paper be citable by others(has ODI or ISBN)?
When you later publish the full research paper, you can (should!) cite the conference proceedings as that work will have been incorporated into your research paper. Many researchers that find your conference paper will look for some follow-up to the conference paper, particularly if you make a note in the paper that it is a work in progress.

With online publishing there are often citation connections made in both directions, so as well as the reference list showing which papers are cited in that paper, there is often a reverse-reference list showing which papers cite that paper. This makes things considerably easier, although I have no information about how comprehensive such reverse referencing is, and it may vary by field.