I think August/September was the last estimated release date I heard. But like all things this depends on testing etc
Not that i have seen, just this old article :-
'The all-new HTML 5 app will be instantly accessible via a menu shortcut and will allow BT to offer curated viewing suggestions and showcase selected content based on viewers’ past watching habits. It will also bring together all forms of related content within the app, for example displaying all paid-for and catch-up content for a given TV series side by side.
Later next year a revamped tablet and smartphone app will be rolled out, bringing the same features and content available within the set top box app to mobile devices.
Customers will also be able to hop between watching a rented or purchased film or TV programme on their both and smartphone or tablet and the app will be further updated at a future point to allow recordings to be downloaded for mobile viewing.'
the picture of the mobile app has the same 'MyTV' section as appears in the next gen update so hopefully that will include the scheduled and recorded items on the box, of course this is just a picture and doesn't for a minute suggest you can play them also so will just have to wait and see. Also presuming the guide tab also let you switch straight to a live 'extra' channels as you can do now on the exisiting app.