The Librem 5's specifications have been finalized, but the hardware looks outdated. Considering the phone's $700 price tag, it's unlikely that the Librem 5 will garner any significant market share. However, the Librem 5 is focused on user privacy and "free and open" software instead of bleeding-edge specifications. In that regard, the Librem 5 is sure to be an interesting niche device.
https://www.notebookcheck.net/Purism-announces-final-specs-of-Librem-5-Linux-phone-excepts-to-start-shipments-in-Q3-of-2019.428426.0.html