The ASUS Radeon RX 560 STRIX seems to be the first RX 560 that has been officially listed on the ASUS oficial website. There are two variants of RX 560 Strix, one is an overclocked model and one using stock configuration.
However we still have no confirmation from ASUS about final clock speeds. The RX 560 STRIX has 4+1 phase power delivery which is meant to enhance durability and efficiency of a fully enabled Polaris 11 GPU. That GPU has 1024 Stream Processors and gets 4GB GDDR5 memory (7 Gbps). Connectivity wise, we are looking at three display connectors: DVI-D, HDMI and DisplayPort, which is a standard configuration for RX 560.
There is no further information is available at this time.
ASUS Radeon RX 560 STRIX Photos and Details Surface
