Hi guys,
For those who are still having touch screen issues after the recent SW update, have you verified if your phones' system apps have been updated as well especially the one for
touch? To confirm it, go to Settings > swipe to applications > store > check for updates. This is one of the first things to check after updating the phone's software. After this, monitor your devices and see
if there will be improvements.
For those asking about the availability of the update in certain countries, we can't provide any date of release. However, there's nothing to worry about as your phones will get an alert once the update is available. Note that its availability will still
depend on the region, on the phone's variant, and on the operator's approval. We suggest checking this link for more info about the latest SW updates: Software
Update for Lumia with Windows Phone 8.
For Cortana related queries in India, this link might help: FAQ - I cannot enable Cortana alpha in India. How do I get it work?.
Hope this information has helped you guys.