Like any smart company, they are also monitoring these channels for demand. If hints of a pending release land with a thud in the community they don't pursue it. However, if excitement builds and it keeps growing (or goes viral) within the community they know what might result in some good sales (making it worth pursuing a rerelease).
For sure, and with any luck that's what they're doing, but we can't forget that Twitter and online communities are very small echo-chambers compared to the wider customer-bases that buy their products - no smart company would base a product release on this alone. (This is why, for
example, the developers of games that find success on platforms like Kickstarter sometimes find their offerings not being such a huge hit once their game is released to a wider market.)
Please don't get me wrong here and think that I'm being negative (I'm sure that nobody does, but it's good to be clear, I think
) - I really hope that these are hints, but I've seen people get their hopes up over non-committal marketing-speak exactly like this before, only to end up disappointed because that's all that it was. The
history of the video game Mother 3 is a really good example of this; The article that I've linked to here covers more than two decades of history (from 1995 to 2018) and even contains quotes from fan discussions about that title from various time-periods, and it really does remind me of how people are responding to some re-used artwork and non-committal wording from Bandai, here.
This actually happening would be a great thing for the toy market as it would help to continue bringing back a dormant product category, and of course it would be fantastic for the dedicated fanbase for the Tamagotchi line and other similar products. I just think that it's important to keep in mind the main goal of commercial social-media presences, as people often make the mistake of thinking that companies are friends and that non-committal marketing text means more than it does, as a result, because they are banking on this aspect of human psychology in order to promote their current wares - or rather, to get people to do that for them for free by re-posting things that will take others to that commercial social-media presence.