AT&T recently announced some changes for GoPhone users and it looks like some additional changes will be coming later in the month. The previous change added support for HSPA+ and LTE network connectivity (provided the user has a compatible handset) and this latest will be switching up the available plans. AT&T has yet to reveal all the specifics, however they have said the GoPhone plans will be changing on June 20th.
AT&T GoPhone users can now get access to 4G speeds. This includes AT&T's HSPA+ and LTE networks, though it is provided the user has a supported handset. For now AT&T appears to have this aimed at those who already have a capable device and simply want to avoid signing a contract on something new. These new speeds are available at this time and will be available with the $65, $50 or $25 per month plans.