On the shooting of a pilot it did seem like it was definate that they would do one but I don't remember him ever specifying "quot;this summer"quot;. He also said he was happy that it was HBO because of the odds of it happening. GRRM said if HBO "quot;develop"quot; 5 shows 3 will be used.
Also, as I said in the "quot;New POV"quot; thread, GRRM kept referring to the new POV as "quot;He"quot;. As in "quot;He will be the last new POV"quot;.