Few-body Λ hypernuclei provide valuable information towards understanding strange matter. Recent experimental progress by the STAR Collaboration at the RHIC facility and by the ALICE Collaboration at the LHC has been matched by theoretical progress reviewed here: (i) lifetimes of the hypertriton Λ3H, Λ3n if particle-stable, Λ4H and Λ4He and their charge symmetry breaking, and (ii) the onset of ΛΛ hypernuclear binding.