Huge jump coming soon, 20% at least... Rockbox and s3 is coming..
They already have them running as they are testing them so it will probably be way lower
No manufacturer can burn-in test their entire production batch at once. They would need access to a massive, massive datacenter just to temporarily test the new ASICs before shipping.
More likely they simply fill a smaller datacenter the machines that first come out of production, test them for a period of time, then ship them out when the next batch arrives for testing.
So when you think you're seeing jumps in network hashrate due to ASIC production, you're only seeing a small part of the total production that arrives for testing and then ships to customers in waves.