My participation in the forum is based on my position as an engineer for the exhaust brake. I will offer information relating to the brake as soon as it is appropriate for me to do so and I will be happy to discuss anything brake-related for a released product. The official Cummins announcement for the brake was issued earlier this week and that's why I'm able to offer information now.
As for any other subject, such as upcoming engine changes, I really can't offer any additional insight. It is very important for Cummins to keep confidential information from competitors. Unfortunately, this also means keeping it from customers. About 5 years ago, a major trucking magazine published an article on the Cummins 15-liter Signature 600 engine almost a year before it was to be officially released. This gave competitors time to develop new products and diminished the advantage Cummins would have had.
So, for anything exhaust brake related, let me know if you have a question. For other subjects, my ability to respond is very, very limited.