Originally posted by Aristophanes You cannot sell FF at the $2,500 price point and not have pro level zooms. Those are not on the roadmap.
The way I see it, they are on the roadmap. Only a ~70-200/2.8 is clearly missing. And who's to say Pentax won't release a FF mirrorless at around the K-5's introductory price, or a Pro level at over $2500? We have no idea how such a FF would take shape right now - the price point will be highly dependent upon how they design it.
Originally posted by Aristophanes They are labelling the 50mm for 2012 as a "standard lens".
Right - a 50mm "standard lens" is only standard on a FF.
Originally posted by Aristophanes From this roadmap we are seeing the fulfillment of the APS-C line-up
There's not a whole lot that still needs to be fulfilled in the APS-C line-up - at least not in a way that's APS-C only.
Originally posted by Aristophanes The green designation is clearly not a "pro" DA* designation, and the 550mm is not a DA* either.
This is perhaps the most curious and intriguing part of the road map, but it's hard to imagine Pentax releasing a low quality prime lens this long. I certainly don't expect them to turn out something like the 500mm f/8 MF junk lenses that you can buy for about $130! But perhaps this is an indication they're aiming to keep it semi-affordable too.
Also, on FF 300mm would appear relatively short for some photographers - choosing 550mm gives them something that's clearly longer (even on FF) than the DA*300's 450mm equivalent FOV on APS-C. And every 50mm longer they go makes the lens bigger, more heavy, more demanding to design as a fast lens, and more expensive to produce and buy.