Some Eurobricks member claims that 2014 will be Invasion from Below and heroes will be minifigs.
I didn't think so at first either, but when you see the prices for the sets according to spielwaren-werst.de, the sets really don't all seem big enough to include both a Hero and a vehicle/monster. They would at very least be a fair amount more simplified. Anyway, Gladiatus, would you mind linking to that Eurobricks comment?
Found the comment. This does make sense, considering the price points and set names, and personally, I'd love some HF minifigures. There aren't many LEGO Aliens or Robot minifigures currently available that have large amounts of poseability, and this sounds like the HF sets could change that. Anyway, I hope it's true, and that if it is, LEGO doesn't screw up this opportunity.
Review of 44018 Furno Jet Machine here, but it also says that these won't be available in the US until March. It's a January release for "the rest of the world" but that probably just means Western Europe, Japan, Australia, etc. and regions that usually get sets late will still get them late.
Edit: He's actually reviewed all of the sets, except EVO Walker, which I don't see. 
Hero Factory wave 2 invasion from below set names
44023 Rocka Crawler Machine
44024 Tunneler Beast vs. Surge
44025 Bulk Drill Machine
44026 Crystal Beast vs. Bulk
44027 Breez Flea Machine
44028 Surge and Rocka Combiner Machine
44029 Queen Beast vs. Furno, Evo and Stormer.
In the Invasion from Below game on www.lego.com/en-gb/herofactory/invasion-from-below