In response to the bittervetstorm of discontent surrounding CCP's failure to live up to their previous promise that Incarna wouldn't take developers away from the core Eve product CCP Soundwave made a comment
And then hurriedly changed it
If you look carefully the change was to turn the capitalised word 'Invasion' into 'a new flying in space feature'.
Now, this could be an internal codename which marketing will play with until they come up with the final title - for example Dominion was known internally as Rubicon. However the name clearly implies a certain direction or theme for the new iteration and combining this with the information that the PVE content design team is apparently working flat out for this release leads me to speculate that this will bring another big step in the back story of Eve.
My guess - the popularity of the live Sansha events has been noted and the theme of pirate incursions into empire is going to be expanded on with more mission content. But that on its own doesn't stand as a feature so perhaps the missions will have some new wrinkles - such as requiring multiple pilots to collaborate or perhaps a 'live' feature where players run PVE encounters in specific locations to help defend systems from attack.
No doubt we'll find out sooner rather than later now.