One possible logical explanation of all this is that Apple is taking Siri in a direction that its creators did not like, but that’s just a speculation. In either case, it is clear that Apple remains focused on Siri.
Siri launched as an intelligent voice assistant and one of the highlights of the iPhone 4S. Since then it has made its way onto the iPad and has evolved to understand and reply about more topics.
Google has responded to Siri with its Voice Search that not only works in many more languages, but is also much much faster as we’ve seen in various comparisons. Voice Search is now available on iOS as well.
But with this ramp up, Apple might take Siri to a comprehensive system-wide level, something that would make a huge difference. When and whether this happen remains an open question though.
source: Tom’s Hardware