Updates are usually every 2-3 weeks. Sometimes it can take longer, but that is what I always aim for.
The main content for the next update will be the events with 3 bee girls, and their CG scenes.
You mean a legendary bow from the raids of the Spire of Courage? You can't craft those.
If you're looking for the bow the elf in the nature raid wants, then you can only get that one from the red chest in the fire raid.
As mentioned, content about the children will not be done until we get to the time skip.