...probably not. In software in general, one of the advantages of a COTS solution is that it's already undergone extensive testing in real world conditions. By the sounds of it, the folks at TTTech developed the code themselves, and were selling it for other industries. If the regulators are going to require a code review and further documentation, that "paperwork" can be developed very quickly, albeit at some expense. I'm sorry, this is pretty much a non-issue with respect to A380 delivery time. The worst that happens here is TTTech and Sundstrand eat a bunch of cash and cough up the documentation/additional QA review. And at this stage of development, software QA can be scaled to rather large numbers; or at least it would appear.
So worst case, money changes hands. If I were looking for causes for delay, I'd be checking weight issues and the nightmare of a supply/manufacturing chain needed to produce an A380.