Interesting! I hadn't heard of them, but according to their webpage, ICS has a customer base of more than 10,000. What's the size of the company, though? Do they have the muscle to develop Qt and sell services on top?
A company that treats it as a "side business" is never going to give the project the respect and resources it deserves
If they are betting their company on the next release then for sure you are going to see a better quality product
ICS could be a good buyer, but I do not discard ARM because they the main player in the embedded arena. Having Qt in his porfolio, with Qt optimized for their platform will help them to compete with the other embedded players (like MIPS or PPC).