I think it catches users eye more than just the text which used to be displayed. It doesn't make a massive difference, but it certianly makes a better attempt at guiding the users eye.
I like the new logo as well, but haven't seen an increase in CTR, it actually went down a little bit since last month.
It certainly looks nicer and more professional. It does catch the eye more, but I didn't give it a thought that this might actaully increase CTR in the process.