Thanks for finding that, RedFlyer, hadn't seen it.
But on reflection it's sort of 'non-news' really. Obviously, until it actually DOES fly, there has to be room for doubt as to when it WILL fly. And they don't have only successfully to complete all the static tests and taxiing tests, without encountering snags - they have to do enough flying (particularly takeoffs and landings) to get the aeroplane certified to the point where it is considered safe enough to be allowed to overfly, land in, and take off from the heavily-populated Paris region.
Tall order to manage all that within five weeks.
"Once you have flown, you will walk the earth with your eyes turned skywards.." - Leonardo da Vinci