The Tablet integration will be perfected and it will be possible to switch between Windows 8 and Android 5 on the same tablet without restarting it!
The OEM's will have the possibility to put both OS's on the same tablet.
This could be a Google Embrace-Extend-Extinguish approach to gain access to the Laptop market. Google wants Android 5 to be fully functional on the laptop too.
It's all rumors
It is not impossible that Google will do this though to meet the expected launch of Windows 8 in the second quarter of 2012.
Microsoft will probably not like it, but they will earn money either way. So far Android is a commercial success for MS - Windows on mobile devices is not.
While we are in the rumor department; HP's new top dog Meg Whitman thinks that Android will become closed source. Now this could be true, or it could be a marketing stunt to blow some life into WebOS.
That is the thing about rumors, they can be planted to achieve a certain goal - or they could actually be true.
Who knows?