I wouldn't update anything if you have already started development. There are no necessary updates. I think the only update in this version is that we have updated the menus to work with the new menu writer release.
With solutions it is better not to update with the new version until you want to do a new version of the site. Only update if you run into specific issues.
If you end up wanting to work with the new menu writer at some point and have an issue for instance, then post a support incident on that particular issue. The update is primarily for people that have not already started their integration of powerstore.