First of all, I think the only confirmed sequel here is Sonny 2. As to when that will be coming out, not even Krin (the developer) knows that yet. They are putting a lot of effort into making it a great sequel, and that takes quite a bit of time.
Keep an eye out on the Armor Blog for updates as to when these games will be released. If it is said anywhere, it will be posted there.
Thanks =)