SQL Server 2012 data striping Is data striping possible like mentioned here data striping in older SQL Server 2005
in the newest version of SQL Server like SQL Server 2012?

I know this is possible in 2008 and 2008R2.
Yes, as reflected in my comments, this capability still exists in SQL Server 2012. There is just an issue in Books Online currently that makes it appear that there isn't a 2012 version of this topic, if the current version of the topic you're in is not the 2012 version.