Abbey Road Studios, the recording venue made famous by The Beatles, has re-opened after being forced to close during lockdown.
The app, first tested on the Isle of Wight, had been expected to be rolled out at the end of May.
Rail passengers will be warned if trains or stations are busy, to aid social distancing.
TV presenter Kate Garraway's partner has been in a coma for nearly 10 weeks, after catching Covid-19.
Tim Davie, a former head of BBC Radio and BBC Studios, is to take over from Tony Hall.
Leigh Francis say he is on a "learning journey" and apologised for black characters in Bo' Selecta.
The glam rock star scored hits with Ballroom Blitz and Blockbuster in the 1970s.
The app will "be running as soon as we think it is robust", a government minister says.
BBC Click's Paul Carter looks at some of the best of the week's technology news stories.
The 18-part series will be recorded from the fictional Norwich-based broadcaster's shed.