The EWG's Final Report details a complete replacement for WHOIS. The EWG proposes an unprecedented “paradigm shift” to a next generation Registration Directory Service. The EWG's Final Report was submitted to ICANN's CEO & Board and will be explored at ICANN 50 in London.
The EWG's Final Report can be found here:
https://www.icann.org/en/system/files/files/final-report-06jun14-en.pdf