Yes.
Saves will be preserved after updating, but it's always good practice to make regular backups of your save files using Checkpoint, just in case.last time I used choidujournx I had no saves ..... so do save games stay after a update ?
thanks sorry for such a crap post
Themes are working, but files made with 7.0.1 are not compatible with 8.1.0. You need to delete theme before updating and use again nxtheme installer after updating.