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Here you will find all the info about the Pokémon Advance Pokémon. At least until it comes out. Currently there are Thirty Seven Pokémon here. So here they are, In Numerical Order:

PokéPicture
Details
Number: #001 (R/S Dex)

Backshot & Sprite:

US Name: Treecko
JP Name: Kimori
Type: Grass
Classification: Forest Lizard Pokémon
Characteristic: Pride: When It's HP gets low. Treecko's Grass type attacks do 1.5 times more damage
Evolutions:
Treecko--Juputoru--Jumoran
Height: 0.5m
Weight: 5Kg
Known Attacks:
Absorb

Number: #004 (R/S Dex)

Backshot & Sprite:

US Name: Torchic
JP Name: Achamo
Type: Fire/Flying
Classification: Chick Pokémon
Characteristic: Raging Flames: When It's HP gets low. Torchic's Fire type attacks do 1.5 times more damage
Evolutions:
Achamo--Wakashamo--Bashamo
Number: #255
Height: 0.4m
Weight: 2.5Kg
Known Attacks:
Ember
Focus Energy

Number: #006 (R/S Dex)

Japanese Name: Bashamo
Type: Fire/Flying?
Classification: Raging Flames Pokémon
Evolutions:
Achamo--Wakashamo--Bashamo
Known Attacks:
Flamethrower
Fire Punch
Blaze Kick
Quick Attack

Number: #007 (R/S Dex)

Backshot & Sprite:

US Name: Mudkip
JP Name: Mizugorou
Type: Water
Classification: Swampfish Pokémon
Characteristic: Raging Stream: When It's HP gets low. Mudkip's Water type attacks do 1.5 times more damage
Evolutions:
Mizugorou--Numakorou--Umigorou?
Height: 0.4m
Weight: 7.6kg
Known Attacks:
Water Gun

Number: #010 (R/S Dex)

Backshot & Sprite:

Pochena
Evolutions: None known
Type: Dark
Classification: Biting Pokémon
Height: 0.5m
Weight: 13.6kg
Characteristic: Can't Run: The Opponent of Pochena cannot run from the battle
Known Attacks:
Bite
Scary Face
Mean Look
Crunch
Swagger
Roar
Thief

Number: #012 (R/S Dex)

Sprite:

Jiguzaguma
Evolutions: None known
Type: Normal
Classification: Healthy Tanuki Pokémon
Characteristic: Item Pickup: Jiguzaguma can discover items In/Out of battle
Height: 0.4m
Weight: 17.5kg
Known Attacks:
Tackle
Tail Whip

Number: #014 (R/S Dex)

Sprite:

Name: Kemusso
Characteristic: Moth Scales: Kemusso Cannot be afflicted with any of the following conditions: Freeze, Paralysis, Burn, Confusion
Evolution Chain
Kemusso (Female)-->Karasairu-->Agehanto
Kemusso (Male)--->Mayurudo-->Karama
Classification: Green Caterpiller Pokémon
Type: Bug
Known Attacks:
Tackle
Stringshot
Poison Sting

Number: #015 (R/S Dex)

Name: Karasairu
Classification: Pupa Pokémon
Characteristic: Moth Scales: Karasairu Cannot be afflicted with any of the following conditions: Freeze, Paralysis, Burn, Confusion
Evolution Line:
Kemusso (Female)-->Karasairu-->Agehanto
Type: ???
Known Attacks:
Harden

Number: #016 (R/S Dex)

Name: Agehanto
Types; Bug/Flying
Evolution Chain
Kemusso (Female)-->Karasairu-->Agehanto

Number: #017 (R/S Dex)

Name: Mayurudo
Classification: Pupa Pokémon
Type: Bug
Characteristic: Moth Scales: Mayurudo Cannot be afflicted with any of the following conditions: Freeze, Paralysis, Burn, Confusion
Evolution Chain
Kemusso (Male)--->Mayurudo-->Karama

Number: #018 (R/S Dex)

Name: Karama
Types; Bug/Flying
Evolution Line:
Kemusso (Male)--->Mayurudo-->Karama

Number: 019 (R/S Dex)

Sprite:

Names: Hasuboo
Types; Water/Grass
Classification: Duckweed Pokémon
Attacks Known:
Growl
Nature Power
Absorb
Scare

Number: 022 (R/S Dex)

Sprite:

Name: Taneboo
Types; Grass?
Classification: Acorn Pokémon
Attacks Known:
Harden
Growth
Bide

Number: 025 (R/S Dex)

Sprite:

Subame
Evolutions: None known
Type: Normal/Flying
Classification: Baby Swallow Pokémon
Height: 0.3m
Weight: 2.3kg
Known Attacks:
Peck
Fly
Focus Energy
Wing Attack
Quick Attack
Growl

Number: #027 (R/S Dex)

Name: Kyamome
Characteristic: Sharp Eyes: No Matter what attack is used against it, Kyamome's Accuracy never goes down
Evolution Chain
Kyamome--->Pelippa??
Classification: Black-Tailed Gull Pokémon
Type: Water/Flying

Number: #029 (R/S Dex)

Name: Rarutosu
Classification: Moody Pokémon
Type: Psychic
Characteristic: Daze: Rarutosu's Characteristic becomes that of it's opponent
Attacks Known:
Growl
Rain Dance

Number: #034 (R/S Dex)

Back Shot & Sprite:

Kinokoko
Evolutions: None known
Type: Grass
Classification: Mushroom Pokémon
Height: 1'04"
Weight: 9.9lbs
Known Attacks:
Tackle:
Leech Seed
Absorb
Mega Drain

Number: #036 (R/S Dex)

Name: Namakero
Classification: Sloth Pokémon
Evolution Chain
Namakero--->Yarukimono Type: Normal
Known Attacks:
Counter
Snore

Number: #037 (R/S Dex)

Name: Yarukimono
Classification: Angry Monkey Pokémon
Evolution Chain
Namakero--->Yarukimono Type: Normal

Number: #045 (R/S Dex)

Name: Gonyonyo
Classification: Quiet Pokémon Types; Normal

Number: #054 (R/S Dex)

Back Shot & Sprite:

US Name: Azurill
JP Name: Luriri
Evolutions:
Azurill--Marill--Azurmarill
Type: Water
Classification: Water Ball Pokémon
Height: 0'8"
Weight: 2kg
Known Attacks:
Slam

Number: #061 (R/S Dex)

Name: Eneko
Type: Normal?
Classification: Kitten Pokémon Height: 0.6m
Weight: 11kg

Number: #086

Back Shot & Sprite:

US Name: Volbeat
JP Name: Barubito
Evolutions: None Confirmed
Type: Bug/Electric
Classification: Firefly Pokémon
Evolution Line:
Volbeat---Irumiize
Height: 0.7m/2'3"
Weight: 39lbs
Known Attacks:
Tackle
Flash

Number: #098

Back Shot & Sprite:

Samehadda
Evolutions: None known
Type: Water/Dark
Classification: Ferocious Pokémon
Height: 5'10"
Weight: 195lbs

Characteristic: Fishskin: When a Pokémon uses a Physical move on Samehadda, That Pokémon is dealt back some damage

Known Attacks:
Leer
Bite
Surf
Crunch

Number: #099

Sprite:

US Name: Wailmer
JP Name: Hoeruko
Evolutions: None Known
Type: Water
Classification: Baby Whale Pokémon
Height: 6'7"
Weight: 130Kg
Known Attacks:
Water Surge
Surf
Splash

Number: #145 (R/S Dex)

Back Shot & Sprite:

US Name: Kecleon
JP Name: Kakureon.
Evolutions: None Known
Type: Normal
Classification: Color Change Pokémon
Height: 1.0 Metres/ 3'4"
Weight: 22kg

Characteristic: Color Change, Kecleon changes to the type of the Move that just attacked it

Known Attacks:
Faint Attack
Lick
Scratch
Psybeam
Tail Whip
Conversion

Number: #160

Back Shot & Sprite:

US Name: Wynaut
JP Name: Soonano
Evolutions:
Wynaut---Wobbuffet
Type: Psychic
Classification: Cheerful Pokémon
Height: 1'4"
Weight: 31lbs
Known Attacks:
Mirror Coat
Encore
Charm
Counter

Number: #349 (R/S Dex)

US Name: Groudon
JP Name: Groudon
Legendary Pokémon
Type: Unknown
Classification: Continent Pokémon
Height: 3.5m
Weight: 950kgs

Number: #350 (R/S Dex)

US Name: Kyogre
JP Name:Kaiorga
Legendary Pokémon
Type: Unknown
Classification: Submarine Pokémon
Height: 4.5m
Weight: 352kgs

US Name: Latias
JP Name: Ratiasu
Evolutions: None known
Type: Flying/???
Classification: Infinity Pokémon
Height: 1.4m/4'7"
Weight: 40kg

US Name: Latios
JP Name: Ratiosu
Evolutions: None known
Type: Flying/???
Classification: Infinity Pokémon
Height: 2.0m/6'7"
Weight: 60kg
Known Attacks:
Ice Beam

Name: Yamirami
Classification: Dark Pokémon
Type: Dark
Names: Jiiransu
Type: Water
Classification: Ancient Pokémon
Names: Sabonea
Type: Grass
Classification: Cactus Pokémon
Name: Unknown
Type: Water?
Back Shot & Sprite:

Yomawaru
Evolutions: None Confirmed
Type: Ghost
Classification: Welcoming Pokémon
Height: 1'7"
Weight: 33lbs
Known Attacks:
Confuse Ray
Back Shot & Sprite:

Pelippaa
Evolutions: None known
Type: Flying
Classification: Shorebird Pokémon
Height: 3'11"
Weight: 62 lbs
Known Attacks:
Gust

Sihlouettes
 

But first, Several new pokémn have been revealed in shadow forms on a Picture posted on a Nintendo site. Click below for the picture:

Promotional Picture

Anywayto the left are some sihlouettes of the as of yetunidentified Pokémon, but the sihlouettes may be a little inaccurate

Names Yet to be confirmed as Pokémon:

Ametama
Absol
Habunake
Bakuong
Zareega
Zarligan
Hasubrero
Runpappa
Raiboruto
Tekkanin
Kinogassa
Numagorou
Umigorou
Irumiize
Jumori
Barubii
Leoleon
Riruru
Marumari