Sorry for such a late reply @pvde. In case you or anyone else plans to travel to FOSDEM, there’s a bunch of Sailfish OS stuff planned.
Sailfish will be present on the Linux on Mobile stand K1-C-6 on both days (I’ll be there; please say “hello”!). There will be a Sailfish event on Saturday night at The Black Sheep which will be amazing. There will also be a Sailfish BoF on Sunday 11:30.
As for presentations, you already picked out the FOSS on Mobile devroom which I think will be most relevant. The libhybris and OpenAGPS talks stand out for me, but I’d love to hear if anyone has other suggestions.