The latest narration on it in English I found.
http://www.thejakartapost.com/travel...-counting.html
Costs exploding. Five years late and counting. Too small already at planning state. Weekly costs of millions to just maintain the construction site where no work gets done. The city state of Berlin is not rich, but highly corrupt and subsidized by other states. But always having a big, super-wide mouth. I know Berlin since decades, I lived there. Bah.
And what the article does not say: since some months now first legal experts and external construction experts say the mess is so complete that the whole place will never open and probably will need to get dismantled.
Incometence, planning dilletantism, impostors, personal animosities, fraud, corruption, a completely incompetent senate (Berlin politics since decades are a mess...) - it all came together.
You will find no case in wole Europe that is even close to this mess, not even in Greece.
Hey, in 2013 short before the planned opening I said
"Never! Not before another 5 years - minimum!" And now 2018 is coming...