The HYPER Whitepaper HYPERfuture is working on will be like the Bitcoin Whitepaper and explain the reasoning and technology behind HYPER. It will explain why there is 5% monthly PoS interest for the next 4.5 years to reward early adopters, before HYPER shifts to 10% annual proof of stake interest for another five years, before settling at 2% annual proof of stake interest that is earned daily.
There will also be a roadmap in the Whitepaper. For example we have developers working on source plugins for HYPER so game server admins can automatically integrate HYPER deposits and withdrawals into their game servers. This should help us reach over 100 online games and servers that integrate HYPER by the end of 2015. At the moment we have over 10 games and game servers that use HYPER: https://bitcointalk.org/index.php?topic=624651.msg10024244#msg10024244 and https://btcdirect.info and https://btcdirect.info/wiki
ETA is later this week. Follow bitcointalk and twitter for updates.