Joomla 1.6 error

I am testing 1.6 rc1 and i loaded the template to see how it would all work out. I got the following error when i made the template the default Tamplate. Fatal error: Class 'JParameter' not found in templates/gk_gamebox/libs/gk.template.helper.php on line 335

My question is will the 2010 templates all not work in j16? and when will the new template for this month be published? hmmmmmm

i just read in another thread that all the templates wont work for J16 and that the Gavick team plans on updating them so that they can. Also a new system of templates or features will be rolled out at some point. So for now 1.5 i shall stay!