With AMD sponsoring a PC Gaming event at E3, this kind of was to be expected. It seems now that the Radeon R9 390X will not show up next month in Taiwan's Computex. But rather will be revealed at E3, which is the 18th of June.

The Radeon R9 390X is Fiji GPU based and the pending flagship graphics card from AMD. Some say it will be available in two versions, an air-cooled one with a standard size PCB, as well as a liquid cooled version with a compact PCB. We'll have to wait and see about that one though.

Due to usage of HBA, High Bandwidth Memory the Radeon R9 390X is expected to have a smaller PCB yet amazing graphics memory bandwith. Other rumors exposes many times now indicate a 4096 GCN 1.2 Shader Processors based product series with 256 TMUs, 128 ROPs and thus that 4096-bit HBM memory interface, offering memory a whopping bandwidth of 640GB/s. 

Time will tell ...