Standard edition of SQL Server supports only a 2 node cluster, but will it support multi-subnet clustering or do we need Enterprise edition?

Even though the Features Supported by the Editions of SQL Server 2014 doesn’t have any indication on which SKUs the multi-subnet FCIs improvement is available, after having confirmed with the program manager who owned the stretch cluster improvement back in 2008, the answer to the question is: multi-subnet failover clustered instances is available and supported on all editions where SQL clustering is available.