I briefly spoke to a representative from Liliput who showed me the following models:
The rail cleaning wagon L236491 compliments the weed removal train
The following 4 photos show the L236001 weed removal train
Something that apparently is eagerly awaited is the L132542 Class E44Electric loco Epoch III
The image below is of the unpainted test shot of the 4 car FLIRT unit announced in the Liliput 2006 New Items supplement (L133980 / L133895 / L133990 / L133995).
Sorry about the lack of other info. There was not much else to see and most of the locos couldn't be seen well through the glass due to all the reflections of the people walking by.