Having looked at the UK government website for the Job Retention Scheme, it looks like that CX will start negotiations at the end of June 2021 for whatever they are planning to do with Europe.
Until the end of June, the UK Gov is paying up to £2,500 per month per employee, reducing in July and further in August then the scheme ends in September.
Under UK Law, they have to negociate for 45 days.
I was unable to lookup the US scheme to compare.
So for LON and FRA, the end date is September, assuming they annouce something before the end of June. That's why DM stated "later in the year" for Europe.
Meanwhile here in HKG, JRC is a policy, and the Government will not give anymore money, hence the announcment of VSS which is less generous than ERS.