I went to the Syracuse Farm Show today. Talked with the LS Rep. (He is the same Rep. I exchanged several Emails with last year re: issues I had with my selling dealer) who said they are supposed to have the new LS built engines in new tractor models starting in June / July. Not sure if they will be classified as 2015 or 2016 models. New motors are common rail. Tractors with the new LS motor will have different model numbers and HP is supposed to be slightly higher than current models. At this time no specs are available to the public yet. Of course they are tier 4 but couldn't go into detail on how they meet the tier 4 specs.
This will not affect any service or warranty issues on previous models.