It seems DIAC's new EOI system has yet to learn to walk. Incredibly after its first month of operation, from the 1st August, they will be only sending out 100 invitations.
Of these 90 will be issued for the 189 visa and only 10 will be issued for the Designated Area relative sponsored class. Then after they can see their system actually functions they will be gradually increasing this number month by month.
* 90 in the Skilled Independent subclass 189; and * 10 in the Skilled Nominated or Sponsored (Provisional) (family sponsored) subclass 489.