Whatever the real development and manufacturing situation may be, AMD needs to launch its new video cards soon, as nVidia has already shown their new high end video cards. The GTX 1080 video cards are already in reviewer's hands, but the NDA is expected to be lifted only on the 17th this month).
AMD Polaris 10 is the faster GPU, which promises Radeon R9-390/390X level performance, while consuming about half the power, and a 299 USD price tag.
AMD Polaris 11 is the smaller GPU, designed for laptops, but it will most likely appear on low-end to mid-range desktop video cards. On the desktop side there hasn't been a new low-end video card since the AMD Radeon R7-240 and nVidia Geforce GT 730, as both manufacturers recycled old chips for the cheaper models: AMD Radeon R5-230 and nVidia Geforce GT 710/720.
AMD Vega 10 was previously announced for a 2017 launch, but rumors are circulating about problems with high-end configurations of Polaris 10, so they may decide to launch Vega 10 early, before the end of this year.
In this slide AMD detailed the target of Polaris 10. For this (internal testing) benchmark they used a Core i7-4790K system with 4x4GB DDR4-2600MHz (this may be a typo, as officially LGA1150 Core i7 processors only support DDR3) to compare a GTX 950 card with a (mid-range?) Polaris card.
In laptops AMD hopes to achieve "console caliber" performance, which will allow some gaming, video editing and CAD apps on a relatively unimpressive laptop configuration and at a low price.
The FP4/AM4 Bristol Ridge platform will also be launched at Computex, which is really needed to get fans interested again in AMD hardware. Unfortunately this platform will not address enthusiasts, but rather the mainstream users, who may be satisfied with a cheap APU or with an even cheaper dual core/quad core processor. The Bristol Ridge product family will bring to the table DDR4 support and the AM4 mainboards, which will be used by Zen processors too (probably with after a simple BIOS update).
This is the leaked screen capture, which revealed most of the new information.
This article was mostly based on this WCCFtech post.