- Mar 1, 2016
More great news! Thank you for all the updates and clarification SURVIVE! Ellie !We will be opening up a last chance preorder for the GSO-5.1 (and all of the remaining GSO models) once it gets closer to cutting. There will definitely be an SK-5.1, we are planning to transition most of the existing GSO models to the SK Series. The GSO-5.1 has been so popular that we will likely be doing another SK preorder to be sure we are making enough of those.