From Frege and Russell to modern mathematical logic textbooks, there were a "shift" of focus from the concept of logical truth, through that of valid formula, to the current concepts of logical consequence and valid argument.
Are there available some recent logico-philosophical reflections on the concept of logical truth ?
Note. Please, this is not a "reference request* : I'm not searching for "classic". I personally think that the "mainstream" view about mathematical logic as abandoned the concept of "logical truth" (see this post ).
I'm not advocating for myself some new "brilliant" insight: I'm simply asking myself (and to the "community") if there is some new research (historical or philosophical) about this idea that at the begin of math log (Frege and Russell) was fundamentale and now - at least, it seems to me - is hardly cited anymore.