This article focuses on the question of the Informal – a category theoretically emphasized in particular by Deleuze in the sixties – highlighting its relevance for the understanding of contemporaneity. If the Informal of the previous decades was the principle of a catabasis from the form (lived as rigid, oppressive) to the formlessness (lived as liberating – the rhizome), the new Informal moves instead from a state of deconstruction, and tries to go back up from fluidity - which is drowning and finally blocking everything - towards a new solidity. The virus, on the contrary, has impressed a shocking acceleration towards the formlessness.