After updating ps cs3 to ps cs6, I lost the "filter Gallery option in filters does anyone know why?
The option is removed to avoid the duplication however the filter are available, read the link for more info.
Moving the discussion to PS forum
This may be a language barrier thing, but the option to display them has not been removed. In fact, an option has been added so that you can still see them in the Filter Gallery if you want to. That option is identified on the page for which the link was provided above.