RAYJAY; I'm sorry, but I have heard nothing on 2 parks, not any more hotels after Pop Century. I have heard, and read that the Disney Institute will be partialy converted to DVC timesahre, (work is well underway), and there will be another new DVC called Eagle Pines built next to Fort Wilderness. I too have been reading rumors about another section of AK to be developed, nicknamed Beastly Kingdom, and nothing official yet...
As far as Fort Wilderness having been expanded, that was originally part of the second phase of WDW developement, in fact Wilderness Lodge's land now sits where Pioneer Hall II was to be built, but all that changed with the threat of the hostile takeovers of Disney in the early 90's.
To my knowledge Fort Wilderness has not expanded. I'll admit there is a gap in my timeline in the years I visited since first going in 1976, but the only change I have seen seems to be more cabins, the removal of the FW Train, and the removal of the sing-a-long & Pizza Bar in Trails End.