Backstay
Lord of Altera
I don't think they will try to tie it in with the TV series. They already said when making the first season that it's not going to follow the story of Rick and the others from the TV series. There will (and have been) references such as Glenn and some others, but it won't tie in with the TV series.
In the secret scene after the credits you see Clementine alone, and then two people walking around in the background a little after. I'd assume those two people were Omid and Christa, but I believe there is a way that that Omid and Christa could have been killed if you make a different choice earlier in the game. If you could get them killed earlier in the game, it's probably not them in the background scene. Unless they'll do like they do with the 400 Days DLC where your options in Season 1 affects the DLC options and story.
In Season 2 I think they will start off where they left in Season 1. Clementine will be there, you will follow those two people in the background, or they will skip that part and jump further into the story where they already met each other or something else happened, and the story slowly, revertedly, catches up with the ending cutscene in Season 1.
In the secret scene after the credits you see Clementine alone, and then two people walking around in the background a little after. I'd assume those two people were Omid and Christa, but I believe there is a way that that Omid and Christa could have been killed if you make a different choice earlier in the game. If you could get them killed earlier in the game, it's probably not them in the background scene. Unless they'll do like they do with the 400 Days DLC where your options in Season 1 affects the DLC options and story.
In Season 2 I think they will start off where they left in Season 1. Clementine will be there, you will follow those two people in the background, or they will skip that part and jump further into the story where they already met each other or something else happened, and the story slowly, revertedly, catches up with the ending cutscene in Season 1.