I have enough books in the house, in print and kindle form, my own acquisitions and books borrowed from libraries, to last for a long time, but I still follow new releases (and reissues) in various ways.
I get a lot of ideas of what I want to read from the website Librarything, much smaller than the better known Goodreads but I like it much better for several reasons. It also includes various discussion groups, some more active than others, and I mostly follow the 75 books group and the Virago Modern Classics group.
There are quite a lot of authors whose new books I'll look out for, via library catalogues and Kindle Daily Deals. And I love to check out charity shops, though I tend to buy more non fiction and classics reprints there than newish books, as I'm in London - some charity shops charge £2.70+ a book, and if it's a book which seems very likely to be offered at some point in the next few months in Kindle form, that doesn't seem worth it, especially as I have so many books already I want to read or reread that it can take me months/years to get to any specific book.
I've also been on the 50 books thread (and the 26 books one) here since at least 2021, though I haven't posted much.
Oh, and I get egalleys of some new/forthcoming releases through Netgalley, and have reviewed books through various websites in the past. So I read quite a few books yet to be published through this source.