Anybody knows...?

Good question, I wanna know more historical info about this game !

После освобождения (в алфавитном порядке): (27 октября)
Алистар
Амуму
Anivia
Энни
Эш
Blitzcrank
Cho'Gath
Корки
доктор Мундо
Evelynn
вздор
трап
Heimerdinger
Жанна
Jax
Karthus
Kassadin
Катарина
Кейл
Malphite
Мастер Йи
Morgana
Nasus
Нуну
Rammus
Ryze
Shaco
Опаленные
Sion
Sivir
Soraka
Тарик
Teemo
Тристана
Tryndamere
Twisted Fate
дергаться
Veigar
Warwick
Zilean

После выпуска (по порядку):
(Dec 02) Udyr
(Dec 17) Nidalee
(Jan 13) Мак
(Feb 02) Gragas / Пантеон
(Feb 24) Mordekaiser
(Mar 16) Ezreal
(Mar 24) Шень
(Апрель 08) Кеннен
(27 апреля) Гарен
(11 мая) Акали
(Июнь 01) Malzahar
(Июнь 09) Олаф
(Июнь 24) Kog'Maw
(Июль 13) Xin Zhao
(27 июля) Владимир

Google is your friend.

This knowledge would serve as a nice nostalgia trip, but alas I am far too tired to venture into the depths of the interwebs in search for this golden information.

Then f u u noob

(MM/DD/YY): Champions added.

04/18/09: Singed and Zilean.
05/01/09: Evelynn, Twitch, and Tryndamere.
06/12/09: Karthus.
06/26/09: Cho'gath and Amumu.
07/10/09: Rammus and Anivia.
07/24/09: Veigar.
08/07/09: Kassadin.
08/19/09: Taric and Gangplank.
09/02/09: Blitzcrank, Janna, Malphite, and Dr. Mundo.
09/17/09: Corki and Katarina.
10/01/09: Nasus.
10/15/09: Shaco and Heimerdinger.

Store Opened (Pre-season):
12/01/09: Udyr.
12/17/09: Nidalee.
01/13/10: Poppy.
02/02/10: Pantheon and Gragas.
02/24/10: Mordekaiser.
03/15/10: Ezreal.
03/24/10: Shen.
04/08/10: Kennen.
04/27/10: Garen.
05/11/10: Akali.
06/01/10: Malzahar.
06/08/10: Olaf.
06/24/10: Kog'maw.

Season One:
07/13/10: Xin Zhao.
07/27/10: Vladmir.
08/10/10: Galio.
08/24/10: Urgot.
09/08/10: Miss Fortune.
09/21/10: Sona.
10/05/10: Swain.
10/19/10: Lux.
11/02/10: LeBlanc.
11/16/10: Irelia.
12/01/10: Trundle.
12/14/10: Cassiopeia.
01/04/11: Caitlyn.
01/18/11: Renekton.
02/01/11: Karma.
02/16/11: Maokai.
03/01/11: Jarvan IV.
03/15/11: Nocturne.
04/01/11: Lee Sin
04/11/11: Brand
04/26/11: Rumble
05/10/11: Vayne
06/01/11: Orianna

thank you