I am still a huge Kheops fan, eventhough they have practicly none games coming out.
That's because they went out of business, to the great disappointment of fans of their games. They tried raising money by breaking into the casual game market, but weren't as successful at that as Frogwares was.
What would you recomend from 2012 that is a type of adventure games close to "Mysterious Island" or "The secrets of Da Vinci code"?
There's nothing quite like the Kheops games being developed these days. The closest might actually be the Nancy Drew games, though of course those don't have historical settings.
If you are OK with 3rd person games (where you see your character on the screen and walk him/her around), there are some other choices.