Yes, but you should be fair. They are pushing really hard. A7, A7r, A7s, 24-70, 70-200, 55, 35, 16-35 round the corner.... etc. All in less than a year. This is not just a new model, but a totally new revolutionary system at the cutting edge of technology, and to place it properly takes tremendous effort. Nikon and Canon are using their old mounts. There is nothing new, beside maybe an updated lens or a new sensor.
I actually think it is pretty impressive what they have achieved in that short time. And this is just the beginning.
Cheers
Jan