Rake is an Australian television program, produced by Essential Media and Entertainment, that first aired on the Australian Broadcasting Corporation's ABC1 in 2010. The fourth series started on ABC TV on 19 May 2016. It stars Richard Roxburgh as rake Cleaver Greene, a brilliant but self-destructive Sydney barrister, defending a usually guilty client. The show airs in the United States on DirecTV's Audience Network and is available on Netflix in the UK, Ireland, Canada, the United States, the Netherlands,India and Australia. A fifth series will go into production in October 2017 and air on ABC TV in 2018.

Can we conclude that will there be a 5th series of rake?
yes