They won't be automatic.

This update will have a follower in the summer, which will add Netflix.

From everything I can gather, this update will incorporate 3D video recording, some sort of online messaging system (some sources mention video chat, but I think this is rather far fetched), the eShop, some patches, and perhaps some other small things. It might incorporate a few more amazing features, but it might not. We'll know in under 20 days, if we make it past the 21st.