Originally Posted by ani

Yes, its a paid upgrade. However, users may choose to continue with EMV 2.3 depending on their needs and requirements.

EMV 3 is a major upgrade with added features like PIM Integration, Cache implementation on Memory/Flash/SDCard and a long list of other featurs to be announced in the Release Post. In case you don't need the added features you can continue with version 2.3

Best,
Ani.