I want to add glass mapper to a new install of Umbraco, but there are two versions available: BoC and regular. I know in Sitecore the BoC version is a branch of glass mapper version 3 so project using Glass do not have to upgrade to keep current.
In Umbraco as far as I'm aware version 4 has not been released (and actually is not fully compatible with 7.3), so what is the difference between the two in relation to Umbraco?