Nintendo, during a Japanese Nintendo Direct have revealed two new 3DS models. These new models will have built-in NFC and an additional directional button. No release outside of Japan ha been announced.
The video seen here shows off all the features, though not in English, everything is still highlighted well.
These new models will also have a more powerful CPU allowing for things like faster downloads. With these new versions having NFC built-in, allowing them to support Nintendo's announced amiibo toy line, Nintendo have said they will sell an NFC adapter for the current models. They will also support custom covers.
Source: Japanese Nintendo Direct