As pointed out, the most noticeable change is that the two large electrolytic through-hole mounted capacitors have been replaced by surface mount equivalents. This is pretty common in all electronics as through-hole mounted components have been going the way of the dinosaur for many years now.
In terms of sonic differences, I wouldn't lose even a moment of sleep over it. Those are 50v capacitors and used as power supply filters for the 48v phantom; the audio signal does not pass through them.