Are you thinking increase the amount of available token supply, or you're thinking even about diminishing it?
They plan on continuing token burns and buybacks to do token burns. It is in their whitepaper. They've already burnt 10 mil after the last ICO stage and will continuing doing such depending on if all the allotted tokens are bought. If they aren't all bought they will burn whatever is remaining from what I understand. The total supply could easily get below 20 million tokens.