There is an article somewhere that stated Bridgestone is currently selling only the 20 degree version in limited quantities online as a test to see if they have any kind of real market to adequately sell a driving iron in the U.S. They have an 18 and 23/24 degree version in Japan but apparently didn't know if they could be a contender in the U.S. utility iron market so they decided on this small batch test run. They claim that if they sold the limited online quantity fairly quick that they may consider seliing the rest of the lineup. If not, most likely this small run of 20 degree utility irons is all we will see in the U.S.
i would be interested in an 18. i am about to buy a mizuno mp18 hifli 16 degree because i want an lazer beam club.