Last I heard it will be released in June. That's still a few weeks in the future. Perhaps what you heard about was the preview event at Qonnections 2015 in april as mentioned in this press release: Qlik Introduces Qlik Sense Enterprise 2.0 | Qlik
The main concept is of course the same, but there it has richer features and will also provide a more complete data discovery platform. I think you will be positively surprosed of the Qlik Sense evolution, but for more details I am afraid you will have to wait for the actual release.
The rendering technique is different by Qlik Sense having browser based rendering, and QlikView has engine side PNG image based rendering. This makes it quite complicated to Qlik Sense enable NPRinting, so I would not set my hopes too high to that happening very soon. There is of course work ongoing with enabling export of data discovery form Qlik Sense, and this will be an improved features set for each coming feature release.
yesterday I visited the Visualize Event in Germany. NPrinting is not integrated in Qlik Sense 2. They said that it will be integrated in QlikView first and maybe end of the year / next year it will be integrated in Qlik Sense.