I think these are way over due from Glock. I'd like a full size frame option, and 22MAG would be great.
I was very hopeful for a Glock carbine since first hearing rumors of one, but got tired of waiting and have a filled my wants from other manufactures. I am Glock fanboy, and full on gun addict so would probably get a Glock carbine if released, but not nearly as excited as I once would have been.
I have no problem with fully refundable at any time pre-sale. I look at the $4/year lost interest as a requirement to have the option to buy one when they become available. Sometimes pre-sale will get you a better price, but for me the real benefit is the 'when'. Some items only arrive in small numbers and pre-salers can have the item a year or more before it becomes a regular shelf item.