Is there any information about the trend of journals preferences regarding Word over LaTeX?
Both ACM and IEEE accept LaTeX publication format, which represents computer engineering to a large extent.1 

Based on this list which categorizes publications in various fields by their 'friendliness' to LaTeX (primarily linguistics-related), many linguistics publications accept LaTeX (especially those related to computational linguistics / natural language processing).2



1 Cf. http://acm.org/publications/latex_style/ and http://ieee.org/conferences_events/conferences/publishing/templates.html. 

2 The list was last updated in January 2010.