[Wehrdo]

Each journal is different in what they allow to be shared. There are primarily three "versions" of the paper:

1. Pre-review, pre-print: i.e. the journal had no part in the paper up to this point

2. Post-print: Changes have been made to satisfy the reviewers' comments. Contains all the final content that will be published

3. Publisher's version: The publisher has done copy-editing (layout changes), and probably adjusted it to fit whatever style their journal is.

You can check the rules for most publications here: http://www.sherpa.ac.uk/romeo/index.php