Graphics card manufacturer XFX has accidentally confirmed on their website that the upcoming AMD Radeon R9 390X is, in fact, a rebranded version of the R9 290X, which launched towards the end of 2013.
On their product page for the XFX Radeon R9 290X Double Dissipation Edition, towards the bottom of the page the company has posted a picture of a box that clearly shows R9 390X branding. The card itself comes with two large fans atop a cooler that includes seven heat pipes, plus the usual selection of display outputs: two DVI, one HDMI, and one DisplayPort.
While specifications for the card aren't shown in the picture, the inclusion of 8 GB of GDDR5 memory indicates this card won't use AMD's upcoming Fiji GPU. Cards that do end up featuring a Fiji GPU will be limited to 4 GB of high-bandwidth (HBM) memory, as AMD has confirmed previously.
Other rumors have indicated that the R9 390X will be a slightly faster version of the R9 290X, while cards that feature AMD's new Fiji GPU will fall under "Radeon Fury" branding. The rest of the R9 300 series will reportedly be rebrands as well, which will disappoint AMD fans wanting to see a wide variety of new cards hit the market.
As for the Radeon Fury, all reports indicate that AMD will launch this next-generation flagship card at an E3 event on June 16th.