The "best guess" is that 4014 will be switched from coal to oil similar to the conversion they did on 3985. Athearn shows versions of 4014 with an oil tender or coal tender and with or without sound in N Scale: http://www.athearn.com/Search/Default.aspx?SearchTerm=Big+Boy&CatID=TNLS
Thank you Bob. I guess we'll see what they come up with. Hopefully it's not too heavily modified from the oil tender version.