PCM.daily's 2009 DB V2 Feature List

Teams
88 teams with updated rosters (mainly) according to UCI's lists.
63 teams have 2009 shirts, mini-shirts and accessories
All teams have new, updated objectives
All teams have updated informations (manager, website, etc.)

Riders
2009 stat update
2009 photos for riders of c. 27 teams
2009 national champions
Updated ages for all riders
C. 1600 free agents
Dopers deleted (only riders active in 2009 are in the DB)
Dead rider(s) deleted (rest in peace)

Graphics
New background (rasm)
New race category icons (Lampert)
New calendar 'bars' icons (Lampert)
Race Flag Package (Arnelesaffer)
Rider Skins for c. 200+ riders
Standard UCI World Cup / Pro Tour sponsor kit

Equipment
C. 77 frames
C. 67 wheels
C. 68 helmets
Equipment linked to the teams, so they use their real-life equipment (where possible)

Stages
70 new races
Cancelled races have been deleted
Renamed races have been .. well, renamed
2009 profiles for:
World Championship RR and TT
Tour Down Under Classic
Tour Down Under
Tour de Langkawi
Vuelta al Tachira
Dutch Food Valley Classic
GP di Lugano
Grand Prix Cycliste La Marseillaise
Australian Championship ITT
Norwegian Championship RR
Giro 'd Italia

2009 Startlists for
Tour Down Under
Tour of Qatar
Amgen Tour of California
Grand Prix Cycliste La Marseillaise
GP de Besseges
Tour de Mediterraneen

Other relevant stuff
CQRanking system has replaced Superprestige
UCI World Ranking has replaced UCI Pro Tour ranking (just a new points shema)
New fatigue system (riders gaining fatigue more slowly)
Lots of new secondary sponsors
Larger budgets for secondary sponsors, making them more important
Lots of new staff
Updates to future sponsor goals

... and probably more, but 1) You're getting tired of this, and 2) I don't quite remember much more than what's listed above