From what I understand, there was progress on the new version of Falcon which is in Alpha (the new_engine branch in git) until around 6months ago:
As there is no more progress I decided to not use Falcon in the end as an embedded scripting language, at least until there is more traction.
Giancarlo Niccolai does almost all the new devs and it's very hard to do that alone on such a big project (I did that too in the past)
so I think it's ok to rest from such effort.
That being said, my understanding is that the new_engine branch is usable so you might want to try it. Although the main issue is the documentation.