I’m slightly obsessed with the Epic of Gilgamesh and own it in 3 translations already, including the 1960 Nancy Sandars translation, the 2003 (republished) Andrew George edition and the 2004 Stephen Mitchell version. Of them, I know the first is outdated (although some parts of the translation are still superb), the second is of high scholarly quality and the third is very much a version and not a translation (the author even positions himself as a new Sin-leqi-unninni) and should be enjoyed as its own piece of literature.
The modern versions make clear that new pieces of the story are being discovered all the time, and the In Our Time Gilgamesh episode from 2016 makes mention of recent new finds (without actually expanding on what they are though).
So is there anything more recent than Andrew George’s translation (which turns 20 this year!) incorporating the more recently discovered pieces of the story?
Alternatively, what are the best journal articles to read about developments on the story for a layperson/non-assyriologist like myself?
You have excellent timing. A new edition by Benjamin Foster was published just last month. In addition to incorporating the new textual finds, it includes supplementary essays such as Gary Beckman's discussion of the Hittite fragments of the Gilgamesh epic (published as a separate edition a few months ago).
For a thematic analysis of the Gilgamesh epic, Louise Pryke's recently published book on Gilgamesh is well worth a read as well.