Why is Sinumerik 810D/840D no longer available in EMCO page?

Hi!

I am an eleventh semester mechanical civil engineering student and I am learning to use my university's cnc machining center as a degree project, an EMCO 450 machine.

My question is why Sinumerik 810D / 840D is no longer available from EMCO Website http://www.emco-world.com/en/product...-810d840d.html does anyone know something? I am new in this so don't judge me haha

I have the doubt if it is an obsolete code or people works with something more modern currently in the industry.

Regards!