Just realised that first two storylines are about dungeons and dragons one at a time. That should hint that they are in fact could be non typical content they planned for the edition.
I am new to hobby and would love to know from veterans if there ware a good historical modules and/or campaigns...
Selling consumable DLC in full price game is not role model i want for wotc to follow.
EDIT: also if we follow that gamedev way, then dev blogs or playtests for every product is more plausible than obscure hints, which in the end will hurt wotc back, given a much broader scope/context of those.
If you read through whole interview, they are planning to do settings in massive chunks one at a time, so i think it is FR only for couple of years going forward, then it would be replaced with another setting for couple of years and so on.