They've decided to make pre-1923 articles from American journals, and pre-1870 articles elsewhere, available publicly (w/o any subscription or even a free account needed): http://about.jstor.org/service/early-journal-content-0

Their original FAQ on it used to have a question about whether this was related to the "Swartz situation", where the answer could be paraphrased as "no but sort of yes", basically that they had been planning it all along but may have moved up some initiatives in response to the publicity. Doesn't seem that their current FAQ has that question anymore.