i think that's a glitch. There are a couple reasons for this. First, there has been no such announcement or press release about this. i also did a search on possible flights between PDX-MCO and there are no direct flights..keeping in mind i searched like for august dates. I thought it might have been a through flight where it makes a stop at JFK, but continues onto MCO with the same flight #...not true.
I'm thinking someone just got it mixed up with Portland Maine PWM.
But of course...what do i know...they could be starting a new route.