What I said in my previous post is what the RhB press release said. I have no further info. It seems unlikely that the sets will be on the Albula line by August, but if they aren't it seems likely they will still be on trial on the other route.
No diagrams for coaching stock (the Swiss give us just about everything else operational-wise so I'm not complaining!) but once the sets are on the Albula it will be possible to work out when they will turn up - if you know that they are on a certain train at the start of the day.
The sets tend to have a just under one hour turnround at Chur, as each one arrives 5 or 6 minutes after the departure in the other direction, for example at Chur the hourly southbound express departs Chur at XX.58, and the northbound arrival is booked 5 minutes later at XX.03, so the stock arriving at Chur at 12.03 will become the 12.58 departure from Chur.
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