Now that you mention it, I found that my Lumia 920 has dust in the front camera as well. It doesn't look like its as bad as yours but I figure its only been 2 days and it can only get worse. Ugh I'd rather not replace it because I just got everything the way I like it!
I have already gone through two black Lumia 920s in the last 3 days due to dust getting under the screen. I swapped it for the red one so far I don't see any. I love this phone but if they don't offer a fix or if Nokia will offer a correctly sealed lumia 920, we may be in that category of "sucks when it happens to you"
I know. It sucks. But it's part of being a first batch buyer. I love my phone, but it's going back. Just too many little problems with it.
I can deal with all the little quirks that can be solved through a software update (most problems fall into this category), but I'm afraid of any hardware defects since I ordered mine off Ebay (meaning it may be more of a hassle to return/exchange). Too many people are reporting things like dust under the FFC or bricked devices after a factor reset.
Admittedly, I cannot see it in the pic, but after looking at mine I noticed the dust as well. That coupled with the light leak I have in the bottom right, along with my phone having frozen a total of six times (once was a random reboot) I am thinking of getting a replacement. Question is, where? No place around me has them in stock. I certainly don't want to get stuck with a phone with faults if I go past my 14 days. Also would like to avoid paying the restocking fee. Decisions, decisions.
I just posted in the other thread about this.. just noticed today that I have 3 very large dust particles inside my FFC as well.. Super annoying. I'm meticulous about keeping my phone clean but I do keep it in my front pocket so it will get dust on it from time to time. I clean it off.. I can see this getting much worse over time and I fear it won't be an isolated incident even if I exchange it.