The last GalNet article not related to a CG or II was
https://community.elitedangerous.com/galnet/uid/5cc966bd92262d34e3723d66 (Distant Worlds Expedition ends, from May)
Before the DW2 ones, I think the ones around the Gnosis misjump.
Before
that I think the announcement of additional shipyards for the Colonia region.
Without IIs or CGs, I wonder what in-game events Galnet will have to report on? One article every six months or so, plus the (not particularly useful) Powerplay summary and the slowly decreasing list of station repair shopping lists, doesn't sound good.
In fairness my perspective on this is that the game is actually in a pretty good position for both features and lack of really serious bugs at the moment (especially with the fix list from Beta + a bit more) ... and what it needs more of is not "more features" but actually making fuller use of the existing features, as the IIs (especially the Enclave) did. But most people seem to want one of features/polish/bugfixes ahead of that, in terms of what they actually request. And of course 'new features' is the only one which makes real-world money. It's understandable that it's not a focus...
... but if you think about what people talk about from the previous years of the game, it's things like the Enclave, the Gnosis misjump, Distant Worlds (both of them), the early stages of the Thargoid invasion before they got too predictable and mechanistic, the Colonia Expansion Initiative, the Dangerous Games, the Salome storyline, going right back to the Lugh War. Features get added, consumed and then taken for granted ... events get remembered and talked about for years afterwards. Especially important in the time of
None of those events involved very much that hadn't been done before in terms of game mechanics - but they combined existing ones, used them in new contexts, put a bit of a story behind them, reasons to get involved, and so on.
Hopefully once 4.0 is out we can get back to that sort of thing.