The oik-batchmove plugin enables you to perform mass updates to the categories assigned to posts. It also enables you to republish posts.

Features
- Selection filter on: Category and optionally a post date range
- Sort selection by: Date posted, Date modified, Author, Title or Status; ascending or descending
- No restrictive items per page limit – you could get a long list
- Use to: add selected posts to a category, add a category to a selection of posts
- Use to: change the category from the filtered category to the newly selected
- Use to: delete the filtered category from the selected posts
- Republish selected posts
- Select all capability or choose individual posts to change
New in Version 2.4
New actions to set post meta data- Bulk setting of post meta data. For single value fields.
- Bulk hiding/unhiding of posts using WordPress SEO post meta values