Originally posted by johnmflores This - either as a K-01 accessory or built-in - brings the K-01 closer to the K-5 in features and specs and current street price, and exposes Pentax to the risk of product cannibalization (people buying the cheaper K-01 instead of the K-5). I bet that there were plenty of discussion within Pentax as to whether include EVF support in the K-01 and technical, photographic, and marketing considerations were debated.
My guess, like others here, is that the next iteration of the APS-C mirrorless product line will incorporate EVF either as an accessory or built in, but only after Pentax has released a K-5 successor that is farther away in features, capabilities, and street price.
A bad strategy, most camera customers aren't stuck with choosing k-01 or k-5, the ones that most likely are is a small part of the market (these are people heavily invested in k-mount lenses). The next update could take a year to happen, customers are most likely going to find alternatives, if they want an evf they will get an evf. If nikon/canon comes out with a similar product in 3-6 months, one that has an evf, then the head start pentax have could be wasted (look how close the Nikon 1 - sep 2011 and Pentax Q - june 2011 were released together, just 3 months).
Also when they release the k-5's successor, then release the k-01 successor/update (even if they are released at the same time), people will expect the new k-01 to be similar to the k-5's successor's specs just like how the k-01 and the k-5 are similar at the moment, if it isn't then people will just be disappointed and the bad reviews/comments/publicity flows in once again.
So in the end people will get disappointed anyway and Pentax once again will get bad reviews/comments for the products (look at whats happening here and whats happening in other sites like dpreview), and all this time Pentax is risking losing their first mover advantage.
The one thing companies should learn from the most successful company out there at the moment (Apple) is that they should not be afraid to cannibalize their own products if it means getting people to buy rather than have them look at the products of competitors. Apple were not afraid to cannibalize their iPods when they released the iPhone, the same for macbooks and ipod touch when they released the iPads.