At the K-01 launch Pentax showed a two year timeline of forthcoming K-mount lenses...

At the launch of the Pentax K-01 there was a lens timeline outlining forthcoming Pentax K-mount lenses for the coming two years. The 2012-2013 range will include:

DA 50mm – no aperture information, due first quarter 2012
DA high magnification zoom lens – no exact information, appears at the 18-200mm point on the chart due first half of 2012
DA 500/600mm telephoto lens – appears at the 550mm point on the chart, expected to be 500 or 600m, due end of 2012
DA 10-30mm zoom - no aperture information, due beginning of 2013
DA 20-40mm zoom – no aperture information, due first quarter 2013
DA* zoom – no exact information, expected to be in the 18-200mm range, due first half of 2013
DA 100-300mm tele zoom – appears approximately at the 100-400mm point on the chart, presumption for a 100-300mm zoom, due last quarter of 2013
AF RC 1.4x teleconverter – due last quarter of 2013