I recently received the new blue version, but I have not used it yet as I have been using up my stock of the red soap.
My wife used the new soap today, not in the foam gun, but in a 2-bucket wash. She has used the prior version many times and has always liked the way it performs.
She told me that she did not like the new version at all. Saying that did not have good lubricity and did not foam up like the old version. This was on a car that was clayed, decontaminated and sealed 2 weeks ago. I was very surprised and not expecting to hear this.
Now I definitely want to test it out myself soon and evaluate the product myself. I have always loved the red soap and I hope there is an explanation for the cause of the difference.