Peter,
The two new CND Specialists are 14'-ish, though I have not yet had the opportunity to fish the GL streams I think these rods are likely candidates. Both rods use the hi-tech graphite of the Specialist Series which makes them extremely light and powerful and both are 4-piece rods.
The 13'8" Skagit Specialist was designed with input from some of the "Skagit-Style" Masters - hence the name. As such, the rod excels with the short head lines and tips that are the mainstay of the Skagit system. The rod performs effortless mid-range casts with tips - therefore, I think perfect for GL tribs. The Skagit also casts mid-belly lines very well. Personally, I liken the rod to an original Sage 9140-4 - that doesn't "crap out" when you load it up. This makes sense as the 9140-4 was the rod of choice for the guys that pioneered the Skagit casting style.
The 14'4" Steelhead Specialist is quite possibly the best "all-round" rod in the CND stable. We tested this rod with every line from Skagit launchers to GrandSpeys and it was exceptional with all of them. If someone were going to be limited to just one rod (horror) then this one would be it. It is light enough for small streams, yet powerful enough for big water and strong fish. In fact it was the upper end capabilities that impressed me the most. I fish large rivers for the most part and favour the longer more powerful rods, but the long line and long cast capabities of the Steelhead Specialist really suprised me - this is a great rod.
I hope to see the rods here soon as they are going to be very popular!