Thanks for clarifying EarlZ, your previous post seems ambigous thats why I made those comments. Anyway I think you might be right, in this page Sempron on 754 will end at model 3800 (I suspect 3800 is a tentative model to be released depending on market demands) after which Sempron on Manila Core will debut for AM2 platform.
http://www.digital-daily.com/cpu/amd...ap/index02.htm