Of course this is speculation but as someone who has bought (and works with) Star Wars toys for 30+ years, I do know toys and the marketing cycles of companies. Plus that aside, it really doesn't take much to put two and two together anyway and especially given some visual clues below.
Without a shadow of a doubt, role play is going to be big in The Force Awakens. It's cheap and can entice kids in to other products, and it's just good fun for big and small alike, (even cheap for cosplayers) and has sold fairly well for Hasbro over the years as a staple part of the marketing mix for key movies.
I'm sure you'll agree you can lay bloody good money we are getting a Stormtrooper role play mask. Expect to see this on shelves well before the movie is out, it's spoiler free, incredibly iconic and a staple Hasbro release for many years.
The blasters are so close in this shot they could punt out the same damn thing and many kids or adults would be none the wiser! Again likely an early release, maybe even as early as September.
Lets face it there have been so many Lightsabers over the years, you just know we are getting crucifix Lightsabers from Hasbro right? Iconic as all hell and now out and making it's own memes it's going to be a big, big seller and out early to hype up the movie. (As if it needed it.)
You don't get iconic original trilogy shots like the X-wings, Falcon, and Tie Fighters appearing without making those iconic ships. Expect to see all three as an absolute given I'd say in some scale or size.
Expect The Vintage Collection to be back, big and hyped in some capacity as the orginal charcaters are back. Plus wouldn't it be cool to see Vintage re-issues of original 5POA classic figures on vintage cards? Can you imagine the press on that alone never mind sales?
What toys or collectibles do you really want to see from Hasbro for The Force Awakens?