Ah, authors! They are all the same: you give them a deadline extension, and they ask for more 🙂
Due to numerous requests, the program co-chairs have decided that:
The authors who have submitted their paper before the deadline (Friday 23rd of June, midnight Paris time) will have the chance to work during the whole week-end to submit an update of their submission no later than Sunday, midnight (Paris time).
Be careful, no new submission will be accepted after the deadline! only revisions.