"Sons of Anarchy" season four is still on Netflix as you are probably aware... Netflix has not picked up season five as of this date... It probably will be on Netflix once season six premiers on television, which will be, Tuesday, September 10, 2013 at 10:00 p.m. EST on FX... I am a big fan... Enjoy
At the moment, there is no definite information as to when exactly season 5 will be available on Netflix. However, Season 5 of sons of anarchy is likely to be on Netflix. This is after season 1- 4 were on the Netflix.