The weekend started with a bang and the release of Windows 10 build 10130 to Insiders.
Today it appears the Newegg may have just revealed the General Availability date for Windows 10 by listing a pre-order of Windows 10 Professional OEM on their website.
According to the listing Windows 10 Professional OEM will cost $149.99 and be available on 31 August 2015.
There is no indication on the page if this is an upgrade version or a full install although typically a full Windows OEM install of Windows 7 also listed for $149.99.
Whether the dates & price are accurate is an unknown but an August General Availability date is feasible with the rumored July RTM.
On a side note - the included images in this listing appear to be from Windows 10 Build 9841 which was released back in October of last year.
Thanks to @MohammadMSFT for the tip.