um .. the client install rar thingy is opened with winrar, you unzip it to your ro folder and it should create a folder called 'shortcuts' as well as put an anthemnew.exe and replace ur current anthem.dll
afterwards you patch useing your anthem patcher and hiting the start button will do nothing, you'll have to double click the anthemnew.exe and enter the game directly or if you want the patcher to work,as in also open the game for u, rename the anthemnew to just anthem
you know ur useing the new client when you see this new button, wich sends to you
www.anthemro.com
as well as you should have the new combat log ingame right next to your normal chat ~nyo^^