This is a great website that has free preschool curriculum based off of LDS themes.
If you are looking for a more spiritual approach to preschool, this site incorporates church related themes with a letter of the week. For example the "A" theme is about Adam and Eve from the bible. The "A" packet has a scripture on Adam and Eve for the child to recite and memorize, a song about Adam and Eve and the story of Adam and Eve to tell the child. There are also several worksheet activities based on the theme and letter of the week.
Thanks for sharing this great resource with us!