As of WordPress 3.5, as I'm sure you all know, the gallery shortcode generated from the media uploader changed and now includes a list of image IDs.
The gallery shortcode codex page says the following:
"It's important to note that this style of gallery shortcode is not new to 3.5, however it is much easier to generate and manage with the new Media Workflow introduced in 3.5."
Does anyone know what the minimum WP version is, in which this style of gallery shortcode will still work?
idsattribute was introduced?