We had an email from easyjet for a flight that is getting near, saying that although it had not yet been cancelled they realised that we might want to pull out and they offered a voucher with (I think) £20 uplift OR a change to any flight, any destination, any time, any price with no extra to pay.
That seemed tempting to book a bit later in the year, BUT, the "condtions" below the main text indicated that if that option was taken then there would be no refunds if the new flights were subsequently cancelled.
Not 100% certain that I am right about that but I think that is correct.