How to find out the editorial times (for article review) of CS journals?
Once a year the Notices of AMS publish the backlog of mathematics research journals containing inter alia the data you are interested in. 

The 2012 one is here:

http://www.ams.org/notices/201210/rtx121001473p.pdf

and the 2013 is here :

http://www.ams.org/notices/201310/rnoti-p1390.pdf

and both do list some journals in informatics including the non-Elsevier ones (e.g. the Springer's Acta Informatica).