I have decided to create a topic which lists all information about the upcoming Sonic game (self titled) being released in the EU on 17th November and over in the US on the 14th (granted the Euro date is in debate over 11th or 17th but 17th is more viable to co inside with major 360 releases such as GOW)
What do we know
Currently as many of you already know - a demo of the game has been released upon Xbox Live marketplace, although being significantly outdated as the demo pre dates E3 2006 but after TGS 2005 - it gives us an insight into Sonics performance as a character in the early stages of development.
Three playable characters have been officially announced to the general playerbase of which comprise of Sonic, Silver and Shadow with speculation over Tails being playable through the series of screenshots that exist over the matter - but these could infact be promotional screens of NPC related assistance in the game.
Other characters that are confirmed for the game in no particular order include: Knuckles, Princess Elise, Robotnik (Eggman), Blaze The Cat, E-101, Big, Rouge and Amy - information from the official game site located at:
http://sonic.sega.jp/sonic (Note - this is Japanese)
The game will feature the Havok physics engine to allow for crumbling effects such as splattation over walls to create new paths.
The game encorporates a Day and Night Cycle which is related to your current timezone
Music
Two tracks are currently known for this title, and incase you do not wish to know these songs - scroll down now:
The first track is a song performed by Zebrahead called "His World" and has been featured on several trailers, with and without Lyrics (most commonly without) and was also played on the Japanese site for a day or so before removal - this track is most likely to be the main theme for the game.
The second confirmed track is a song performed by Hip/Hop - RnB Singer - Akon , and he performs the ending theme of Sonic the Hedgehog 2 on the Genesis (Mega Drive) called Sweet Sweet Dreams and is either the ending or theme of Princess Elise in the game.
Although another track can be heard played on the official Sega of America site - this theme is as of yet unconfirmed for the game but is most likely to feature as a level soundtrack (with some fans believing the level Crisis City)
Levels
(Information for the above levels can be found on the Sonic 2006 page at Wikipedia: http://en.wikipedia.org/wiki/Sonic_the_Hedgehog_(2006_game))
Bosses
As of current - only one main enemy has been released to the playerbase besides the obvious Robotnik and Silvers mission against Sonic - but Mephilles seen in some screenshots to be similar to Shadow is said to be the Hedgehogs main enemy within the game.
Another boss character seems apparent with the robotic dog/hind seen in the colluseum in several trailers with Sonic grinding along his back and grabbing hold of his horn on his head
Plot (Major Spoilers)
As of current - the plot of the story has not been officially released to the public, but information from SonicCult believes the plot to be based on Elise, with her containing the Flames of Disaster and the Lblis trigger - and if she was to cry - she releases this power upon the World - although this has not been confirmed