We already knew about "The Shadow Man", since it's an earlier draft of the poem "Shadow-Bride" appearing in THE ADVENTURES OF TOM BOMBADIL (1962, poem #13), but I'd completely forgotten that Wayne & Christina had succeeded in tracking it down and reprinted the earlier text in their expanded/annotated edition of ATB a few years ago (2014; cf. p.235-239).
But I had no such luck with THE ABINGDON CHRONICLE, despite my even calling up the elderly former editor of a local newspaper from that era -- the NORTH BERKS HERALD I think it was called -- who assured me that nothing of the sort had ever appeared in his paper. I remember he was bemused that anyone wd go to such lengths when it was only Tolkien, saying that he himself was a Sir Walter Scott man.
So, given that Tolkien's fans have known about "Shadow-Bride" for decades, and Tolkien scholars have known about "The Shadow Man" for quite a long time now, and actually been able to read it for the past year and a half or so, the bigger news here is the second poem: NOEL. So far as I know this had been completely unknown -- at least, this is the first I've ever heard about it. We do have some (minor) Christmas poetry included among the FATHER CHRISTMAS LETTERS, but I don't think this one is among them. Unfortunately, I don't have a copy to read to compare with: while the whole text (I assume) was printed in the original announcement of the rediscovery, I see it's now vanished from the online article. Let that be a lesson to me: when I find important material on-line I shd copy it right away because sometimes it goes away suddenly.
Of course the biggest take-away from this is not the two poems themselves but the fact that the discovery of two Tolkien poems is headline news, not just for the OXFORD MAIL and CATHOLIC HERALD but for national newspapers such as THE GUARDIAN. This was not the case when Tolkien published ATB back in '62, and it's just another example of his newfound major-author status.
*one of the sisters told me she'd been taught by Tolkien, having attended his lectures in the early 1960s. She said he was a terrible lecturer.
Here's a nice little audio clip in which Professor Dimitri Fimi discusses the discovery on BBC Radio Wales: Enjoy!