Here is a screen shot of the new information:
The webmaster blog explains how to get this additional information from your job listings on your web site into the job search feature in Google search.
(1) Salary information requires the baseSalary property within the job postings markup to be added.
(2) For salary estimate information, but not specific salaries, use occupation structured data instead Google said.
(3) For better location information make sure to populate the jobLocation property within the job postings markup.
Here is a view of the location filters in search:
For more coverage on this search feature see Techmeme.
Forum discussion at Twitter.