Is there a windows 9?

Nope, they skipped Windows 9. Next verion is 10.

Never heard of  Windows 9 computer but  heard  of  Windows 7  and  I know Internet Explorer  9  just  been  released  to be out

No there's no windows 9 the latest one is windows 7.....

Yes , coming soon
Why you don't try MICROSOFT OFFICE 365

Nope, Windows 8 is the latest.

There is Windows 7/8/8.1/10, but no windows 9. And windows 10 is the last version of Microsoft.

Nopes....

Nope the new windows is windows 7 I installed it last week and its way better than the old one :)