You’ve got a new template you can use: image.php (yee ha!) The new gallery feature seems to set up ’sub-posts’ for each of the images attached to a post or page. If there is no image.php in your theme, it will use the single.php template (best as I can tell, anyway) to display them. But you can create this image.php template and use new template tags to display the thumbnail navigation if you wish. (You can also change the layout or whatever else you’d like as well, of course.)

The new thumbnail navigation template tags:
previous_image_link() and next_image_link()

Include these in your image.php template file the way you would normally include template tags. Check the Default theme that’s bundled with the new 2.5 install to see how it’s done there. You also have to deal with new template tags like:

wp_get_attachment_image() and wp_get_attachment_url()

Again, the only existing documentation seems to be the image.php file itself in the new version of the Default theme.

Simple Tagging was made redundant by the now baked-in WP tagging. Not hard to change that, except that I have no way to import the old tags. (If you’re using UTW, you’re in luck, there is an importer for that.) I decided that it wasn’t that big of a deal to me – it’s not a system I’ve used a lot, I only had like 50 tags total anyway, most of them applied only once – so I’ll just start from scratch from here on in.

I also had to drop my use of FeedList to display my del.icio.us posts and Google Reader shared items. I’ve got it running through feed2js code right now, but if any of you see a new, working feed display tool (plugin or widget, either way), please give me a shout.

I think I’ve got all the kinks worked out, but if you run across something weird, please give me a shout. Updated CSS and dynamic ‘mitten map’ are yet-to-come items.