I went to Linnanmäki today. Here's the scoop:
The Immelmann is almost complete, same for the first inversion. you can even see two supportbeams that aren't connected to anything. I speculate these will be used for the immelmann.
They have started to put up more supports, this time on the other side of the service road. They already have supports for all the turns here, so now they only have to install the track so that the two halves connect.
Another angle from the immelmann, the hearline-roll and the first janky inversion. You can see here, that the one missing support for the turn next to the immelmann has now been installed, confirming our theory that is was missing because of spacerequirements.
If you look closely here, you can see the supports that are for the turn-arounds into the second launch. You can even see supports for the launch (next to the yellow truck/machine).
When I was at the site looking, one of the workmen started chattning with me. I had a great view of the construction, but he asked me to only take photos from the sidewalk. I asked him some small questions, and he said that they are a bit behind schedule. He was really nice, and said that even though they are behind schedule, it will still be opening next summer.
They are also almost finished with all the track on this side of the layout, so soon they will start moving construction to the launch/helix-are next to tulireki. In two weeks, they have acomplished a lot of work, so I speculate that if winter isn't harsh we can see the layout finished before newyears/febuary. They are already like 40% done with this coaster, and the last remaining areas shouldn't be too time-consuming.