Windows Phone 7.8 has the same office with Windows Phone 8
Some Windows Phone 7.8 features was showed in testing Windows Phone 7.8 on Nokia Lumia 510. And there is a very interesting point that the icon of the Office is same with the Office icon in Windows Phone 8.
But can the office icon confirm that Office will come to Windows Phone 7.8? There is a way to update Windows Phone 7.8 first. So there are someone who update the Windows Phone 7.8 already. And my friend who use HTC HD 7 has flash the phone and use the ROM confirm that Windows Phone 7.8 will get the new Office that is same with Windows Phone 8.
The Office in Windows Phone 8 is the best apps that present the Office file with a less mistake. So you will working easily in your phone. :-)