There have certainly been some reported issues on this forum, though I wouldn't say the floodgates have opened, at least not yet anyhow.
The three primary concerns are the multiair system, the turbo and (on Euro6 variants) the DMF. All have been known to fail on relatively young, low mileage cars - the unfortunate owner of the latest DMF failure is looking at a potential £5k bill on a 38 month old car.
Whether the TA engine has the long term durability of the 1.2 FIRE is, as yet, unknown. Personally I wouldn't bet the farm on it, but it wouldn't stop me buying a new TA if I was planning to change it after 3yrs or so. If I were looking for a long term keeper, then I'd be looking elsewhere.
It's not that easy to find the right balance between giving false reassurance and unnecessarily alarming potential buyers.