"Nissan’s long-awaited second generation of its battery-electric Leaf could make a public appearance as early as in a few weeks.
In its first year of existence, the new Leaf’s range could be not quite as breath-taking, consistent Yokohama scuttlebutt says, and the far-ranging version could come a little later as an option."
Note: that article is from 12/16/16 when that author (from dailykanban) and others (InsideEvs, PushEv, autobloggreen) were expecting Leaf 2.0 to introduced at CES on January 5th, 2017 or in Detroit on January 10th, 2017.
But... Nissan delayed the announcement and launch until September. Could that delay have been to allow time for the 60kWh battery to be available at launch? Or to complete testing on a new chemistry for a 42kWh battery? (It's also possible that the delay was to allow for additional ProPilot testing... or for an unrelated issue).
Either way, it wasn't definitive info because it is sourced as "scuttlebut" and because the Leaf 2.0 didn't make an appearance "in a few weeks".