The BBC has pretended that this was an open source initiative whereas it has been anything but, so the requirement that the specification as it stands be published within twenty days means that we will finally get to see what progress has been made over the past two years.
The free-to-air requirement is rather more restrictive and could pose a problem for the BBC's commercial partners.
What is, perhaps, going to be important is positioning on the default EPG, but surely this should be editable by the user anyway of this platform is going to be any good - nothing is more annoying than those hundreds of channels you never watch clogging up the EPG. It remains to be seen if the 'top five' slots will need to be reserved as they are for current broadcast platforms.
So, a good result for the industry. Well done, BBC Trust.