Read original post by Brad Sams at Neowin.net
According to new information that was posted to 4pda.ru, Windows Phone “Apollo” will bring platform parity with Windows 8. We must stress that this new information has not been confirmed but does align to previously rumored information.
If you are asking what platform parity means, according to the source, this means that the phones OS is now based on the NT kernel where as it was previously based on the Windows CE kernel. [...]