Received an email offering 3 months free Stan. Looks like its targeted so check your email or your Optus Perks app.
Terms and Conditions:
Available to select Optus customers. New customers receive 3 months Standard subscription. Existing / returning customers receive a 3 month upgrade to Premium subscription. Returning customers must re-subscribe to access the offer. All promotional subscriptions are followed by a paid subscription unless cancelled. Existing Premium subscribers ineligible. Limit of one per customer. Must redeem by 1 July 2018. Full terms at stan.com.au/optus/terms
I got nothing, cheers anyway
(Copy/Paste the above if you want to make me your site Overlord!)