The short answer is: yes.
The syllabus states that you need to know the law as of 31/12/2010 and EQE 2011 will certainly have a number of questions on divisionals.
Your answer to a simple question like: "you anticipate a refusal in oral proceedings next week - what is the last possible moment to file a divisional?" may now be completely different. (see here for the answer)
I would also say that this is essential knowledge for daily life.
Also the legal basis for being able to file up to (but not including) the mention of the grant is no longer OJ 2002, 112 or GL A-IV, 1.1.1. It has now become Art.67(4), G1/09.