After the update is released, it takes the place of the old version. But the core of the gameplay and the mathematical model remain intact. The changes are largely about refinement, so the established rhythm will persist. I’d recommend testing the new version with an open mind—it’s designed to be a superior experience https://data-api.marketindex.com.au/api/v1/announcements/XASX:ALL:2A987292/pdf/inline/fy2016-results-announcement all around.