According to a recently leaked internal T-Mobile memo, it looks like some new international calling and text messaging plans are about to be rolled-out. The plans are expected to go into effect on December 8th and will only be available for post-paid customers on a $49.99 (or higher) per month calling plan. The details of the plans will include free long distance calling to landline number as well as discounted long distance to mobile numbers and unlimited text messaging to mobile numbers. That said, the free long distance to landline numbers will still use your mobile minutes, they just will not have long distance charges attached. All said and done, there are 56 countries in total on the list, which you can check out on the graphic below.