Was trying to find a new deal for myself since my contract is nearly up and found this while browsing.
Unlimited calls to 10 international countries too
Not as good as the Optus 15gb deal but pretty good if you absolutely want Telstra
for an extra $5 you can get a sim for data share
https://www.telstra.com.au/latest-offers/upgrade-plan-XL-100
Invite only, but worth talking to the reps if you really want it. Note this link is for personal, not business customers