Is catatonic schizophrenia not schizophrenia anymore? what is it then?

It is still: Schizophrenia - just another form of it.

Exactly the same: Only the nomenclature (names) change to confuse (protect) the innocent. Often, the dsm's (diagnostic statistical manual) revised to best describe criteria for mental illnesses. Symptoms get added ; dropped - sometimes whole conditions do. Once, homosexuality was an illness - changing societal attitudes ended that. Don't worry - the condition is exactly what it is.

Schizophrenia: Yes "catatonic" schizophrenia is still schizophrenia. Catatonia is one possible symptom a schizophrenic person might show -- either being unmoving (waxy flexibility or catatonic "stupor") or catatonic "furor" (moving around so fast and so constantly they exhaust themselves. The most recent diagnostic manual eliminated these different "types" of schizophrenia, but people can still exhibit symptoms.