Had these missiles been successfully delivered and deployed, they might have had an impact on the ongoing siege of Gaza. But they were not delivered and surprise has been lost, so the siege continues.
In the mid term, Gazans' best chance of relief appears to rest on an upcoming Egyptian government becoming truly representative, with a foreign policy reflective of Egyptian popular sentiment. It's a big "if" but if attained, the siege may finally be lifted.
IDF press cue, providing content details. Note the logo and translated addendum.
C-704 command and control system
Two box cannisters containing Nasr AShMs
C-704 "Nasr" missile detail (1)
C-704 "Nasr" missile detail (2)
H/T Tom Cooper at ACIG.org