Waves will be inflation-less system, limited supply.
There will be incentives. You need to wait for new tech papers.
Announcements and updates will be showing up during the ICO.
First one incoming soon.
I'm sorry but POS consensus algorithm, means it can be staked?
The Waves testnet will have a Nxt like consensus mechanism, which is also POS. Next there will be new POS implemented and some scalability approach will be revealed.
Please wait for details. I can`t reveal too much before official announcements and papers appear.