Snapshot Optimized is a modpack for snapshots aiming to make them slightly more tolerable for people with older pcs. It includes very few mods however those mods are useful for testing out snapshot features. These mods include C2ME, Ok zoomer and Carpet Mod.
Modpacks will usually come out about 1 or 2 days after the snapshot as mods need time to update.
In the future theres a higher chance of more mods being added.