Valid license holders for Optimizer Pro will continue to receive support if required, but the product has now been removed from sale, in preparation for the release.
I want to say a big thank you to everyone who's enjoyed using the plugin to optimize their sites over the last six and a half years, and wish you all the best for the future.
NextGEN Gallery Optimizer improves your site's page load speed by preventing NextGEN's scripts & stylesheets from loading on pages without galleries.
What's more, if you're using the original NextGEN Gallery (v1.x.xx) or the NextCellent Gallery fork, Optimizer will intelligently fine-tune all your gallery pages too... detecting every shortcode and setting to only load what's necessary.
For full details of the optimization process across all versions of the gallery, please see Optimizer's optimization flowcharts.