Looks like Telstra has followed suit Optus on the international calling deal, even if only for less than a month.
EDIT: From Website-Recharge before 22nd August 2016 on the $40 and $50 to get unlimited international standard calls. Technically, should end 28 days from 22 Aug 2016.
Combine it with this deal to make this deal sweeter by $15.
Offer includes unlimited calling to Canada,China,Hong Kong,India,Malaysia,New Zealand,Singapore,South Korea,United Kingdom & United States.
Includes 3 GB of Day and 3 GB of Night Data.
If you ask, how is it better deal than Optus, then its on 'Telstra Network'
Enjoy
So, for 90% of the population, 3Gb of data each month.