Changes to BBC radio transmission

[nickc]

We listen every day to the international stream of BBC Radio 3 and over the last day or two they've been interrupting the service with an announcement that from March 22nd it will no longer work on certain devices and (typically helpful BBC!) to contact your device manufacturer for assistance. I expected the internet community to be awash with comment, but so far can find nothing, even on the BBC's own website! Perhaps I can't see for looking - it's happening more frequently to me these days - but I'd be grateful for any info anyone here can provide. In particular:

1. Is this announcement going out on the UK transmissions too? (We live in France.)
2. I surmise that it's all part of the Beeb's attempt to herd everyone towards their 'Sounds' app; does it mean everything else is likely to disappear eventually?
3. How will it affect MinimStreamer?