^
I can't read in the developer's mind but their project is all offices and speculative, while the local office market has been going down as we said it several times on the forum... So they just mustn't be in a hurry, must be watching for the right time to launch the work.
By the way, though I don't think I'd ever seen them, the 2 last renderings are quite ancient. That was before the tower was slightly shortened. You should now try to imagine the result with roughly 20m less and a couple of more buildings of about the same height in there. In short and again, a supertall to tease and arouse this thing is now seriously needed, cause it's been kind of asleep.