omeka/Omeka v2.2 on GitHub

Omeka 2.2 was released on July 2, 2014.

New Features

Omeka now supports shortcodes for embedding content such as a list of recent or featured items, as well as plugin content, such as a map from the Geolocation plugin.
The new Simple Pages plugin bundled with Omeka supports shortcodes in the page text.

Configurable and extensible derivative image (thumbnail) creation
Blacklisting and whitelisting image creation by MIME type in config.ini
Support for using ext/imagick instead of command-line ImageMagick
The default ImageMagick derivative creator no longer separately tries to run identify; this can double thumbnail creation speed for some files

Any record type can return a "representative" file Omeka can use for displaying thumbnails
Collections and Exhibits select a representative image for themselves and so will show thumbnails on the front page, their browse pages, and in shortcodes
Items, Files, Collections, Exhibits, and any other records with representative images will show thumbnails on sitewide search results

Admins can hide the header listing the element set ("Dublin Core") on item/collection/file pages through Appearance Settings
Additional fallback thumbnail icons for audio, video, and image types
Sorting links on the default public collections browse view
Common "single.php" themeable display for Items, Collections, and Exhibits used in recent and featured sections and shortcodes
Dev-editable button text for items-specific search

New interface for manually resending the user activation email message to a user.
The user edit page is split among three subpages and more closely follows the admin style
The Item-specific advanced search page more closely follows the admin style
The File edit page has tabs for each element set and filter-added section, like the Item and Collection add/edit pages
The dropdown for selecting a Collection for an item is sorted alphabetically by collection title
HTML edit boxes for metadata will automatically grow with the text input

Username restrictions greatly relaxed to allow email addresses as usernames
Theme configuration can now be divided into named sections
Accessibility improvements throughout the admin and public themes
jQuery and jQuery UI now automatically fall back to local copies if the CDN copy can't be loaded
All records can be sorted randomly
Search term input on "Narrow by Specific Fields" disables for "is empty" and "is not empty" types
Files can be internally filtered by original filename (#616, thanks to Daniel Berthereau)
Simple "OR" searches on records by providing an array of values (#622, thanks to Daniel Berthereau)

MIME types could be incorrectly set for multiple files uploaded simultaneously
HTML in titles shown incorrectly on batch-edit
Invalid XML characters could break omeka-xml and omeka-json output (#617, thanks to Rachel Donahue)
Emails sent by Omeka did not support non-Latin characters (#618, thanks to Marios Bekatoros)
Element names were not localized on items/browse listing of filters (#620, thanks to Matti Lassila)
On the item-specific advanced search, "does not contain" did not include items that completely omitted the element (#621, thanks to Daniel Berthereau)

A small number of plugins need to be upgraded to work with version 2.2:

For release information aimed at developers, see What's new in Omeka 2.2 in the developer documentation.