Live 9 comes in three editions: Intro, Standard and Suite.
The editions share common features, but Standard and Suite have additional features, Instruments, Packs and Effects.
Here are the features common to all editions of Live 9:
Unique Session View for quick, intuitive composition, flexible performance and improvisation
Multitrack recording up to 32-bit/192 kHz
Nondestructive editing with unlimited undo
Powerful MIDI sequencing of software and hardware instruments
Advanced warping and real-time time-stretching
Unlimited Instruments, Audio effects and MIDI effects per project
VST and Audio Unit support
Time signature changes
Multiple automation lanes
Automatic plug-in delay compensation
MIDI remote control instant mapping
MIDI output to hardware synths
WAV, AIFF, MP3, Ogg Vorbis, FLAC file support
Ableton Suite 9 is an integrated studio
3000+ Sounds (50GB)
MIDI tracks: Unlimited
Send and Return tracks: 12
Audio inputs: 128
Audio outputs: 128
Now includes Max for Live.
Intel Mac with Mac OS X 10.5 or later, or PC with Windows XP,Windows Vista, Windows 7 or Windows 8; Multicore processor; 2GB RAM; 1024x768 display; DVD drive or broadband internetconnection for installation.
REQUIRED DISK SPACE FOR BASIC INSTALLATION:
3GB free disk space.
DISK USED IF ALL INCLUDED SOUNDS ARE INSTALLED:
Live 9 Suite: 55 GB free disk space
Live 9 Standard: 12 GB free disk space