You can find out more about the software changes for Lumia phones from here.
- Where do I get news about SW changes for Lumia phones?
- Can I move or save apps to my memory card on my Lumia phone?
- Which languages does Cortana support?
- How can I block phone calls and text messages (SMS) to my Lumia phone?
- How can I transfer my contacts, messages, calendar entries or photos to my Lumia?