Has there been any signs of Quarians so far?

Possibly.  As I said, i'm not sure about my timelines because I remember Gillian leaving with them, but I think the last hiroshima of a book came out after that, and I read it but really don't remember what happened in that one.

I'm 100% certain they're in the game at this point. Whenever anyone asks on Twitter we get vague answers instead of a straight-up "no" which is basically a "yes they're in the game". Think one quote from a dev was that we're "the last hope for the quarians" or something.

Someone even asked where the quarian MP characters were and if they were in SP yesterday and got the answer "we'll leave that mystery for you to discover "

If there are any quarians in andromeda, and I sincerely hope there are, some of the other comments give me hope, they would rely heavily on the turians for support, having the same dextro dna and all, they'd be able to eat their food, use their meds (for the most part), other facilities, etc. 

edit: actually thats another good reason to bring them along i guess... rather wasteful a planet just for turians where likely the other planets would have to be shared among asari/human/salarian/krogan.

I'm sorry, but if the Krogan tagged along, so can the Quarians. The argument that one side has more reasons to join the other is pure - pure subjective made up points.

We will have to play the game (obviously), but I have good feeling they will be in there based on Aaryn's tweets.

And I said twice now that there may be some quarians present in andromeda, maybe working engineering or something aboard the nexus as part of the mixed crew, but the quarian civilisation is gone. The arks hold the cryochambers for the colonists. And the arks are the colony ships. They build one ark for 20,000 humans according the briefing. So, if there were say 20,000 quarians going, they would have their own ark for colonisation purposes. But they don't...

 If you want a non-lore answer, the developers were forced to remake the game in ANOTHER galaxy because of the negative comments of the ME3 endings. Due to comments from the fan base on the ME3 ending that is the main reason this next game is in andromeda. Am I right or wrong about that?

The way the game has been developed is a massive open world game but to make room for new races and lore in andromeda because we are in a new galaxy, the decision by bioware seems to be to not include all milky way races as a consequence and knock on effect. The means the exclusion of the quarian civilisation but perhaps not individual quarians.

If the fan base has not reacted so negatively to the ME3 endings, this chain of events would not have occured. This game would be set in the milky way galaxy and there would be no retcon. In the milky way galaxy there would have been a much greater likelihood of seeing some kind of quarian civilisation despite the choice between the geth and quarians in ME3. 

Bottom lining it, the developers were forced due to fan feedback to make a new setting for the mass effect franchise, a setting that does not lend itself to having a massive quarian presence. Thats it. I mean bioware has limited time and spending resources and it already is a massive game. So much so that they excluded a salarian squadmate from your team. If they think an extra squadmate is too much, how about an entire new element to the gameplay lore by introducing quarian colonists. 

Now it may be possible that there are quarian colonists and the reason we haven't seen them is because the marketing for this game has been a bit rubbish because they are holding back lots of information until the last few weeks until release. But 2 weeks from release and no quarian reveal is too late. 99% of people don't follow mass effect news as people in this forum and won't know about a quarian reveal now. I believe I heard by a developer that there are other civilisations in andromeda that haven't been revealed yet and probably won't be revealed until people start playing the game. But not revealing THESE civiisations is some kind of marketing ploy to not ruin the wonder and exploration of the game. However we already know a lot about quarians so this reasoning doesn't really apply to this case.

thanks for responding so reasonably, i wonder how you missed this was the answer that SalMasRac was looking for. these are points i can agree with: MEA is not in the milky way because of the ME3 endings, given, it seems that most species in the MW are Minor but I have heard mixed "Confirmed" reports  that ALL the MW races WILL reappear just as VERY MINOR roles in MEA, and reports that most species have been outright dropped with the krogan and maybe another being the only minor species. so it COULD be that the quarians were dropped along with many other species, or it could be that there are a few of ALL the species and there are only a few quarians, but I do not see that anything the fans did, or even the lore of Andromeda, excludes having the quarians as a second minor race alongside the krogan. unlikely? in the sense that it is JUST AS LIKELY for it to be Elcor or Drell/Hanar? sure; krogan/quarian is just as likely as krogan/volus, and either of those would be more likely than batarians.

If they are only hinting 2 weeks before release it means they don't intend to reveal the quarians before the games release. 
And if they do something stupid like reveal a quarian next week or something, someone on the marketing team should be fired because 99% of players who are not fannatical about ME but who liked the quarians are not going to see that.

Quarians are my second favorite race. My favorite one are the Geth.

That being said, I believe neither of them should be in Andromeda in order to respect Mass Effect's lore.
A Quarian cannot simply leave their duty to the Migrant Fleet and embark on a human-led endeavor into the unknown. Each Quarian individual is like a property of the Migrant Fleet, they live, strive and die for it rather than for their individual pursuits. They always have to return to the Migrant Fleet. It would make no sense whatsoever for Quarians to be part of the Andromeda Initiative.
The Geth are just the same, but even more strict. While Quarian individuals might have individual dreams and aspirations, the Geth don't. The Geth would simply not embark on a human initiative and separate themselves from other Geth units, that would make no sense whatsoever.

Both reasonable arguments. Also, neither would be likely to receive an invitation. The Geth, at the time of departure, are still largely considered responsible for the Sovereign... situation. And the Quarians don't have the best reputation either. Aside from the whole "they made the Geth" thing, the arrival of the migrant fleet in a system is pretty much the galactic equivalent of a gypsy camp on your lawn.

The Quarians will probably still be involved, or at least have the option to be at a later date. The Talimancers have too much influence on BioWare for them to be ditched forever, logic be damned.