Can someone explain what content is in the Reformed packages in the libraries?

Are you looking for what specific books, commentaries, etc. will be included in the coming 2025 Reformed Libraries? If so, I haven't seen an announcement of their release yet - but you could get a good idea of the type of content by searching the Store for Legacy Library and checking out the past content in Reformed Packages from the past.

https://www.logos.com/search?query=Logos%206%20reformed&sortBy=Relevance&limit=60&page=1&ownership=all&geographicAvailability=availableToMe&useFuzzySearch=false&viewMode=grid

No problem at all! There are some very good resources in the Legacy Libraries and sometimes at an outstanding value!