An order of magnitude is 10 times.
One order of magnitude is ten times greater, two orders of magnitude is 100 times greater, etc.
The phrase can be used literally to mean something that is ten times faster, better, or the like, but can also be used figuratively to mean something that is vastly different than before.
It can be used both positively and negatively:
The computer was orders of magnitude better than the abacus.
Last night's hangover was an order of magnitude worse than the one I had after your bachelor party last year.
In the context of this phrase, there are no breakthrough developments that will really significantly increase productivity, reliability, or simplicity.