You have to dig for it but a while back friedcat said the platform would be available for the first dividend payment.
That is indeed what Friedcat has said before..... Trading platform would be up and running before the 1st dividend payment....
He also has stated on multiple occasions that it would be a 3rd party solution closely affiliated to them....so it would seem that development of the platform would in no way hinder the deployment as it is done by someone else....