Third Quarter is already clogged with FaD's Core, GM Kit, first adventure book, and the AoR Alliance worlds sourcebook. This is assuming the FaD adventure and AoR regions book don't get bumped into 4th quarter.
I'd say we'd get one in fourth quarter, probably Bounty Hunter because it's going to be less bogged with new rules, and is more of just about neat gear. And then Technician will be late first, maybe early second, quarter 2016, because it's got things like Scavenging and Invention rules to deal with. And we'll probably get our first FaD career, and a couple AoR careers in-between, maybe even an AoR adventure.
I still subscribe to the initial FFG tagline that these were independent games that shared the same rule set. With that said, I'd hoped to get more EotE this year independent of what's going on with AoR and F&D. However, the points you make are valid that if they are looking at the overall Star Wars RPG situation they might find the field too thick to get both EotE career books out this year. Ultimately my wish will be to see them both in 2015.
Regarding the lack of an adventure book, that's disappointing if that was announced. Shame but understandable given how much Star Wars they're producing this year.
Even in the 40k line, which were very much distinct lines with much less intercompatibility, there tended to be a drop off of production rate over time.