Speaking of [subscribe-to-open](https://www.jeffpooley.com/2020/03/the-simplest-of-models-for-open-access-to-research-proves-itself-welcome-to-subscribe-to-open/): Lisa Hinchliffe, [in a Scholarly Kitchen post](https://scholarlykitchen.sspnet.org/2020/03/09/subscribetoopen/):
> Annual Reviews announced today that the 2020 volume of the [*Annual Review of Cancer Biology*](https://scholarlykitchen.sspnet.org/2020/03/09/subscribetoopen/) has been published open access and that the back volumes of this journal are also now available for free reading. As the [pioneer of the Subscribe to Open model](https://scholarlykitchen.sspnet.org/2019/04/02/subscribe-to-open/), congratulations are due on achieving their first open title. [...] As interest in Subscribe to Open grows based on the experiences of early innovations, publishers and libraries need to develop an understanding of the various approaches to Subscribe to Open and the benefits and limitations of the model.
The [post](https://scholarlykitchen.sspnet.org/2020/03/09/subscribetoopen/) is a fair overview of the potential benefits along with some limitations and long-term hurdles. It's good to see S2O (as the cool kids call it) get some attention in the wake of successful pilots.