Happy new year, everybody!
Based on an analysis of recent polls by pro-independence Vilaweb, there would likely be a 63% turnout in a unilateral independence referendum (i.e. one held without the Spanish government's permission). The result from such a referendum would be 79% in support of independence.
That would clearly be enough to justify a declaration of independence, to be followed by a process to agree a new constitution for the Catalan republic, and fresh elections. While many Catalans may not have noticed, detailed and serious plans for future independence have been underway for some time. Among other things, the Catalan government has been quietly creating a diplomatic corps from within its staff. Unofficially, the hobbyists working on things like a Catalan constitution, and the changes needed for independence to happen, are being taken much more seriously. I've attended some interesting debates.
Meanwhile, while we have seen the Spanish state using some of the tools at its disposal to try to derail the independence process (constitutional court rulings, probably funding groups like SCC*, the Pujol accusations, banning judges, diplomatic pressure, criminal cases brought against elected officials, and now formal accusations of incitement to sedition), we have yet to see the state bring out its big guns. Those include: banning political parties (Anna Gabriel thinks there's a chance of this happening to the CUP); jailing elected officials (Mas/Forcadell); and intervening directly in Catalonia's autonomy (appointing Josep Enric Millo as caretaker president).
I think it's fair to say that things must come to a head in 2017. Failing to at least announce a referendum this year (and really, it needs to be held this year), will cause confidence in the process to decline. So all eyes are now on the llei de transitorietat jurídica, the law which will establish legal and judicial continuity should Catalans vote to become independent. This law is, in essence, a de facto declaration of independence and the moment it is approved by the Catalan parliament will likely be the 'train crash' moment we've been predicting for the last few years.
* Is it just me, or is Societat Civil Catalana on its last legs? They've changed leader, again, and their former supporters are now involved in a competing
gravy train think tank. If I'm right, we'll see SCC lose this year's court case and wind up its activities sometime next year.