Tradjenta was approved by the FDA one month ago (#msg-62668535).
Despite the fact that the DPP-4 arena is crowded, LLY paid B-I a large amount of money in Jan 2011 to collaborate on Tradjenta and other diabetes drugs (#msg-58667443). This is the collaboration that caused AMLN to sue LLY for breach of the Byetta/Bydureon partnership terms.