SEP 12.1.6 vs 12.1.2 detection rate

Does anyone know if v12.1.6 offer better protection agains malware than 12.1.2?

Not talking about fixes or performance issues.

Is there a new scan engine or feature since 12.1.2 and 12.1.6? If so, would this engine help detect threats faster or more accurately?

Thanks for any answers.