Billy Coen
No, Resident Evil 6 is coming out this year.
There is currently not enough information to say if Resident Evil 7 will be the last of the series. Perhaps sometime closer to its release the Capcom company will release news on this.
Wesker.
The last boss is Osmund Saddler
Albert Wesker is the last boss
Valentine
Alomar
Not at all. Capcom would never cease development of one of their most popular franchises. Expect more in the future.
Chris Redfield is first seen in Resident Evil 1, where he and the original S.T.A.R.S. members infiltrate the Mansion. He is not seen in RE2, but you get to see his sister Claire Redfield instead, who is looking for him in Raccoon City. Later on in Resident Evil: Code Veronica you will get to play as Chris again, as he sets out to find his sister on Rockfort island. You will then get to play as Chris (and Jill as well) in Umbrella Chronicles for the Wii. And then in Resident Evil 5 where he is one of the main characters again. Last but not least he makes one last appearance in Resident Evil 6 as a main character.
the zombie outbreak scenes, and the last scene when she is in the car, and you see that umbrella can controll her.
Her name is Alice Abernathy.
the latest release is Resident Evil Darkside Chronicles which is only for the wii. A special edition of Resident Evil 5 will be released soon sometime in March. This will have 3 new stories; Chris&Jill in the mansion as seen in the flashback of resident evil 5 ; Jill&Josh this will be when you save Jill and she stays behind and escapes the island with josh; and the last chapter im not yet sure of. the special edition will come along with a code for NEW costumes for chris and sheva and some bonus characters for the new RESIDENT EVIL MERCENARIES REUNION