That enlarger makes part of the modular System-V. It is the most modular system ever introduced at enlargers. Nothing has changed to the basic design idea. Part of that system is still manufactured.
"7005" means that it got a head configuration capable of 6x7cm. Within that range you again could chose as basic kits between b&w, Multigrade and colour and with the latter also autofocus. But being an extremely modular system you can re-figurate everything.
Though before going into the System-V you better have a look at a system overview. For instance by means of a 10 years old Kaiser catalogue.