This is the Pentax HD DA 560mm F5.6 ED AW lens:
Sample photos
Digital Camera Watch (Japanese): Full-resolution photos taken with a Pentax K-5 IIs.
Resources
Official HD Pentax DA 560mm F5.6ED AW at Ricoh Imaging Americas Corporation.
The Pentax HD DA 560mm was announced on Sep 10, 2012 — read the press release at DPReview.com.
Related
Pentax Lenses — Main page.