Microsoft announced that they’re retiring the development of the product InfoPath.
No new version of InfoPath will be released in the future. So the last version is InfoPath 2013.
But Microsoft is investing effort in a new forms technology which will better integrate SharePoint, Access and Word.
MS Office Blog Post
So what about product support?
Expiration of the Extended Support (according to information on Microsofts page)
- InfoPath 2003 will be supported until April 2014.
- InfoPath 2007 will be supported until October 2017.
- InfoPath 2010 will be supported until October 2020.
- InfoPath 2013 will be supported until October 2023.
More details about the roadmap of the new form technology will be presented in March on the SharePoint Conference in Las Vegas.