A new version of arc_meta for Textpattern is now available.
Version 1.3 adds support for section and category images for open graph and Twitter cards. The limits on the length of meta titles and descriptions has also been increased, although it is recommended to keep these short to benefit from there use for SEO.
If you’re upgrading from an earlier version of the plugin I recommend that you make a backup of your database first. arc_meta 1.3 will alter the structure of the arc_meta table. It shouldn’t cause an issue, but it is better to be safe than sorry.
You can download it now from the arc_meta plugin page.
The next major release should hopefully include a new interface for allowing users without access to the Presentation menu to edit the section meta data.