Xbox Next May Cost Twice as Much as PlayStation 6 Due to Magnus APU and Third-Party Stores Support; Xbox PCs Won’t Support Backward Compatibility:
Quote Originally Posted by WCCFTech
[...] Commenting on the next-generation system on the NeoGAF forums, known AMD leaker Kepler L2 reiterated that the leaked AMD Magnus APU will power both the console and a line of gaming PCs, adding that, contrary to speculation, only the console will support backward compatibility with previous-generation Xbox games, mostly due to publishers not being okay with an Xbox game license getting turned into a PC game license. Outside of a legal grey area of a potential Xbox/Windows dual boot, Microsoft will likely have no way to get Xbox backward compatible games on PC.

On the other hand, the Xbox next-generation system supporting Steam and GOG games shouldn't have legal issues, and should be feasible on a technical level by running the game inside a virtual machine. However, supporting third-party stores on the system will likely cause the price of the console to be significantly higher than the PlayStation 6, possibly around double, as Microsoft will need to sell the system at a profit without the 30% cut on every game sold on the system and with the added cost of the Magnus APU, which is reportedly a very large APU. [...]