FSE has posted two previews of their upcoming PBR cockpit for Beech King Air C90 on their Facebook page. Also, the developer announced that he doesn’t work on the FSEnhancer Add-on for X-Plane at the moment, as the development is temporarily stopped.
The previews show off the cockpit with PBR textures, the main panel and the passenger area. However, somebody asked about the development of FSE add-on, which improves the visuals and environment. The developer answered that the development of it is temporarily stopped. No reason has been attached. The release date of the new FSE is not yet known. The same applies to the PBR cockpit of Kingair C90
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EDIT: Article edited due to misleading information.