The FOLIO Project is moving quickly in several independent development streams to build functionality on the platform. For information on the development plans, please consult these two documents:
FOLIO Development and Milestone Plan (v1 document)
This Excel spreadsheet shows the high-level timing and coordination of platform apps under development for the version-1 release in 2018. The document is maintained by Harry Kaplanian in consultation with the FOLIO Product Council and the software development teams.
This Google Spreadsheets document has a finer granularity of description of functionality in development or under consideration by the special interest groups (SIGs). The document is maintained by members of the various SIGs. Rows with a "1" in the second column of each sheet are prioritized for version-1 development (also known as "above-the-line" functionality).