The tech specs (https://shop.puri.sm/shop/librem-5/) say librem 5 will use Gemalto PLS8 3G/4G modem.
The PLS8 modem has multiple variants as can be seen at https://www.gemalto.com/brochures-site/download-site/Documents/M2M_PLS8_datasheet.pdf.
I am a Canadian using Freedom Mobile. I would like to use variant PLS8-X for librem 5 as it supports LTE bands 13,17,5,4, and 2. Freedom Mobile supports bands 4, and 7, and will be/already supports band 13. Will it be possible to choose the variant for the modem for a librem 5 phone?
Edit: Seems that baseband modem is swappable: https://www.reddit.com/r/IAmA/comments/87tbfl/todd_weaver_from_purism_doing_a_reddit_ama/dwfh9nb/?st=jfiqa5hg&sh=df3e76c8
The Librem 5 will actually have an m.2 slot for baseband (how cool is that!), so being able to open it up, and swap out the modem, allows for all sorts of additional use cases beyond the core functionality. It also allows us to get pre-certified modems for the regions, so a dual benefit!