- Full data is now available.
- Filters are now available (and are a super set of "collections").
- Data producers can now publish to Gnip via ATOM, REST, or XMPP.
- Data consumers can now get activities via REST and XMPP.
If none of that means anything to you, that’s ok. Shane Pearson, Gnip’s new VP of Products translates it into "more English" in his post titled What we are up to at Gnip.
If you are a developer, wander over to the Gnip API v2.0 spec and take a look.