When it was announced that Bill Farmer and Nick Jameson would not be reprising their roles as the voices of Sam and Max for Telltale's season, a lot of people were pretty upset, at least at first, but it would appear that German-speaking fans of the characters will not be sharing that disappointment.
Our own Laserschwert, by way of Telltale's forums, reports that the localized version of the upcoming retail release of Sam & Max: Season 1 will feature Sandra Schwittau doing the voice of Max in the German dub as she did for Hit the Road. It's not yet known if Sam's German counterpart, Hans-Gerd Kilbinger, will also be on board, but it wouldn't be surprising if JoWood (the European publisher) was able to nab him too.
Update They were! The German dubbers of Sam and Max for Season 1 will be the same as those for Hit the Road.
Source: Laserschwert