So here is the list of changes for Version 0.80 of NextGEN Gallery :
1. Cache the SinglePic

Everytime a post is using a singlepic tag it require CPU power to generates the image, with the new cache option, NextGEN Gallery creates for each used SinglePic a file, which don’t require any CPU calculation time.
2. Support for permalinks

It’s maybe not the best solution for the SEO fanatic guys, but NextGEN gallery support now some rewrite rules as long as you have a mod_rewrite enabled WordPress installation.
3. Support for multi file batch upload

The fantastic SWFupload allows now a upload for multiple files at once by ctrl/shift-selecting in dialog and a progress bar during the upload. I integrates this at the moment only single images and not for the zip upload. You need a Adobe Flash for this option.
4. XMP, IPTC and EXIF meta data can now automatic imported

During the upload (and also later) you can populate the tags and description field with your Exif, IPTC or XMP data. NextGEN lookup first for XMP , then IPTC and at last for WinXP EXIF data. If some meta data are found then this information will be automatic used for the tags and description field.
5. Individual settings for a gallery and slideshow

For each post/page you can enter custom fields (look at the bottom of the edit page ). There you can enter any key / value for this post. I created a couple of parameters to override the global settings of the gallery/slideshow with local values. The picture is a example for two parameters (Sound file and rotate time for the slideshow). All parameters are listed here : http://nextgen.boelinger.com/custom-fields/
6. Up to 10 Widgets for random /recent gallery

I rewrite the Widget function to exclude galleries from your Random/Recent Widget. It support also the Sidebar manager from the K2 Theme