Future of the SAP RFC SDK

Is the SAP RFC SDK (wdtfuncs.ocx, wdtlog.ocx respectively Interop.SAPFunctionsOCX.dll, Interop.SAPLogonCtrl.dll) an acceptable / recommended way to connect (Microsoft) applications via RFCs with SAP ? Will there be a support and maintenance of the S开发者_如何学JAVADK in the future (especially in ECC 6.0) ? Are there people who use these controls in .NET applications ?

I have good news for you. SAP plans to release a new version of the SAP.NET Connector. See http://wiki.sdn.sap.com/wiki/display/ABAPConn/ABAP+Connectivity+Home

SAP Connector for Microsoft .NET 3.0 released.
The NCo 3.0 can be downloaded from SAP Service Marketplace, including accompanying documentation.