This is part of what was posted on a New Zealand forum by the GO Engines importer, it was posted March 21st 2013.

"It appears GO Engine Co is releasing two new designs over the next few months - the GXII Plus+ and the Cera. We are yet to decide if we will be bringinig these new models in.
GO Engine Co has undergone some major management changes over the last 6 - 8 months, which have resulted in some radical changes in direction as regards design philosophy and target markets.
These new design philosophies are ground breaking, but as yet unproven, and we feel that we need to step back and adopt a wait and see approach to their new product lines before putting them on the market here."