Command git cherry shows the changes which haven't yet been cherry-picked.
Example:
git checkout master
git cherry development
... and see output a bit like this:
+ 492508acab7b454eee8b805f8ba906056eede0ff
- 5ceb5a9077ddb9e78b1e8f24bfc70e674c627949
+ b4459544c000f4d51d1ec23f279d9cdb19c1d32b...
