Together with the three new Nikkor lenses, yesterday Nikon also announced a new line of “high-performance” protection filters under the name Arcrest made with real, 2mm thick glass. Five different filter sizes were introduced:
Additional information available at Nikon Japan website (translated) and DC.Watch (translated). The PDF brochure can be downloaded here (in Japanese). For now it seems that the new filters will be available only in Japan.
The filters can be purchased on Amazon Japan.