My list of gameplay/button mapping for '06 made on February 9th 2013.
Button Mapping.
Sonic: Y- Light Dash (Mid-air or ground)
X- Grounded(hold)-Spindash, (Mid-air)- Bounce attack (Tap while in spindash formation to un-roll like in SA2)
B- Spinkick (Grounded & Moving)(Hold and release or tap)
A- Jump, (Mid-air)-Jump Dash, (Mid-air)(Near enemy)- homing attack
Tails: Y- FPV (First Person View) Dummy Ring Throw
X- Grounded(Tap)- Dummy ring throw
B- Tail whip (Grounded or Mid-air)
A- Jump, (Hold to ascend, let go to slowly descend like SA1)
Knuckles: Y- N/A
X- Grounded (Standing/walking)- one-two punch, Grounded (Running) one-two punch, (Mid-air)- Drill drive
B- Homing punch (Stand still or while moving)
A- Jump, (Mid-air)- Glide
Shadow: Y- Enter vehicle, (Mid-air) Light Dash
X- Grounded(Hold) spindash, (Mid-air) Chaos spear
B- Grounded(Standing,walking,running) Spin-kick, (Mid-air) Chaos attack x5
A- Jump, (Mid-air)- Jump dash, (Mid-air, tap, near enemy)- Homing attack (Holding will give you a short delay after impact giving you a chance to use chaos snap or chaos attack x5
Rouge: Y- FPV Bomb Throw (Grounded or while flying)
X- Standard kick combo x3, (Running) running kick combo
B- Grounded Un-aimed bomb throw, (Hold) x5 Bomb Barage
A- Jump, (Mid-air)- Fly (Airplane physics)
Omega: Y- N/A
X- Grounded/Mid-air (Hold) lock-on shot barrage, (Tap) lock-on shot
B- Omega Launcher
A- Jump, (Mid-air) Glide
Blaze: Y- N/A
X- (Mid-air or Grounded) Fire Claw Dash AKA Homing Dash (Midair/Grounded and near enemy)- Fire claw/Homing Attack
B- Grounded (Tap) Spinning claw (Can last longer depending on how long you've pressed and held it)
A- Grounded- Jump
Silver: Y- Light Dash (mid-air & grounded)
X- (Grounded,Mid-air) Hold Smash
B- Psychic Slash x3 (Mid-Air, Grounded)
A- Jump, (Mid-Air)- levitate, (Quickly pressed after jump) Teleport dash
RB- Acceleration(Grounded)(Action Gauge Slowly depletes while used)
RT- Psychokinesis (Turning it on during a Light Dash will speed you up)
Amy: Y- N/A
X- Grounded Hammer Attack x4, (Mid-air)- Aerial Hammer Attack
B- Evade
A- (Grounded)- Jump, (Mid-air)- Double Jump
Espio(Pending): Y- Invisibility (Last until gauge fully depletes)
X- (Tap, Grounded, Mid-air) Kunai Throw, (Hold, Grounded/Mid-air) Shuriken Throw)
B- Repel (If done at right time, you can repel any attack just before it impacts)
A- Jump, (Mid-air)- Homing Impact
Button Mapping.
Sonic: Y- Light Dash (Mid-air or ground)
X- Grounded(hold)-Spindash, (Mid-air)- Bounce attack (Tap while in spindash formation to un-roll like in SA2)
B- Spinkick (Grounded & Moving)(Hold and release or tap)
A- Jump, (Mid-air)-Jump Dash, (Mid-air)(Near enemy)- homing attack
Tails: Y- FPV (First Person View) Dummy Ring Throw
X- Grounded(Tap)- Dummy ring throw
B- Tail whip (Grounded or Mid-air)
A- Jump, (Hold to ascend, let go to slowly descend like SA1)
Knuckles: Y- N/A
X- Grounded (Standing/walking)- one-two punch, Grounded (Running) one-two punch, (Mid-air)- Drill drive
B- Homing punch (Stand still or while moving)
A- Jump, (Mid-air)- Glide
Shadow: Y- Enter vehicle, (Mid-air) Light Dash
X- Grounded(Hold) spindash, (Mid-air) Chaos spear
B- Grounded(Standing,walking,running) Spin-kick, (Mid-air) Chaos attack x5
A- Jump, (Mid-air)- Jump dash, (Mid-air, tap, near enemy)- Homing attack (Holding will give you a short delay after impact giving you a chance to use chaos snap or chaos attack x5
Rouge: Y- FPV Bomb Throw (Grounded or while flying)
X- Standard kick combo x3, (Running) running kick combo
B- Grounded Un-aimed bomb throw, (Hold) x5 Bomb Barage
A- Jump, (Mid-air)- Fly (Airplane physics)
Omega: Y- N/A
X- Grounded/Mid-air (Hold) lock-on shot barrage, (Tap) lock-on shot
B- Omega Launcher
A- Jump, (Mid-air) Glide
Blaze: Y- N/A
X- (Mid-air or Grounded) Fire Claw Dash AKA Homing Dash (Midair/Grounded and near enemy)- Fire claw/Homing Attack
B- Grounded (Tap) Spinning claw (Can last longer depending on how long you've pressed and held it)
A- Grounded- Jump
Silver: Y- Light Dash (mid-air & grounded)
X- (Grounded,Mid-air) Hold Smash
B- Psychic Slash x3 (Mid-Air, Grounded)
A- Jump, (Mid-Air)- levitate, (Quickly pressed after jump) Teleport dash
RB- Acceleration(Grounded)(Action Gauge Slowly depletes while used)
RT- Psychokinesis (Turning it on during a Light Dash will speed you up)
Amy: Y- N/A
X- Grounded Hammer Attack x4, (Mid-air)- Aerial Hammer Attack
B- Evade
A- (Grounded)- Jump, (Mid-air)- Double Jump
Espio(Pending): Y- Invisibility (Last until gauge fully depletes)
X- (Tap, Grounded, Mid-air) Kunai Throw, (Hold, Grounded/Mid-air) Shuriken Throw)
B- Repel (If done at right time, you can repel any attack just before it impacts)
A- Jump, (Mid-air)- Homing Impact