In his blog Typblography, Adobe’s Product Manager for Fonts & Global Typography, Thomas Phinney, reported that “the CS4 font list looks a lot like CS3, except for a few fonts removed, and a new registration incentive: the complete Sanvito Pro family (there will be a new landing page for this family, but it's not up yet). Sanvito Pro is a versatile informal script face with four weights and four optical size variants for each weight, for a total of 16 fonts.

“Typefaces you might have seen in CS3 that aren't in CS4: Arno Pro, Bickham Script Pro, Garamond Premier Pro. Further typefaces bundled with InDesign CS3 but not InDesign CS4: Bernhard Modern Std, Caflisch Script Pro.

“There are more East Asian fonts, notably:
- Adobe Kaiti Std and Adobe Fangsong Std, additional simplified Chinese fonts
- With InDesign and suites including InDesign, the "Pr6N" versions of the Kozuka Gothic and Kozuka Mincho typefaces. These fonts have the Adobe-Japan1-6 character set, and are JIS-2004 savvy.

“All in all, still a LOT of fonts, just a slightly smaller set.”

Phinney says that the following fonts will be part of the standard font installer used by most CS4 apps:

ACaslonPro-Bold.otf
ACaslonPro-BoldItalic.otf
ACaslonPro-Italic.otf
ACaslonPro-Regular.otf
ACaslonPro-Semibold.otf
ACaslonPro-SemiboldItalic.otf
AGaramondPro-Bold.otf
AGaramondPro-BoldItalic.otf
AGaramondPro-Italic.otf
AGaramondPro-Regular.otf
BellGothicStd-Black.otf
BellGothicStd-Bold.otf
BirchStd.otf
BlackoakStd.otf
BrushScriptStd.otf
ChaparralPro-Bold.otf
ChaparralPro-BoldIt.otf
ChaparralPro-Italic.otf
ChaparralPro-Regular.otf
CharlemagneStd-Bold.otf
CooperBlackStd-Italic.otf
CooperBlackStd.otf
EccentricStd.otf
GiddyupStd.otf
HoboStd.otf
KozGoPro-Bold.otf
KozGoPro-ExtraLight.otf
KozGoPro-Heavy.otf
KozGoPro-Light.otf
KozGoPro-Medium.otf
KozGoPro-Regular.otf
KozMinPro-Bold.otf
KozMinPro-ExtraLight.otf
KozMinPro-Heavy.otf
KozMinPro-Light.otf
KozMinPro-Medium.otf
KozMinPro-Regular.otf
LetterGothicStd-Bold.otf
LetterGothicStd-BoldSlanted.otf
LetterGothicStd-Slanted.otf
LetterGothicStd.otf
LithosPro-Black.otf
LithosPro-Regular.otf
MesquiteStd.otf
MinionPro-Bold.otf
MinionPro-BoldCn.otf
MinionPro-BoldCnIt.otf
MinionPro-BoldIt.otf
MinionPro-It.otf
MinionPro-Medium.otf
MinionPro-MediumIt.otf
MinionPro-Regular.otf
MinionPro-Semibold.otf
MinionPro-SemiboldIt.otf
MyriadPro-Bold.otf
MyriadPro-BoldCond.otf
MyriadPro-BoldCondIt.otf
MyriadPro-BoldIt.otf
MyriadPro-Cond.otf
MyriadPro-CondIt.otf
MyriadPro-It.otf
MyriadPro-Regular.otf
MyriadPro-Semibold.otf
MyriadPro-SemiboldIt.otf
NuevaStd-BoldCond.otf
NuevaStd-BoldCondItalic.otf
NuevaStd-Cond.otf
NuevaStd-CondItalic.otf
OCRAStd.otf
OratorStd-Slanted.otf
OratorStd.otf
PoplarStd.otf
PrestigeEliteStd-Bd.otf
RosewoodStd-Regular.otf
StencilStd.otf
TektonPro-Bold.otf
TektonPro-BoldCond.otf
TektonPro-BoldExt.otf
TektonPro-BoldObl.otf
TrajanPro-Bold.otf
TrajanPro-Regular.otf
AdobeHeitiStd-Regular.otf
AdobeMingStd-Light.otf
AdobeMyungjoStd-Medium.otf
AdobeSongStd-Light.otf
AdobeKaitiStd-Regular.otf
AdobeFangsongStd-Regular.otf

Phinney also reports that these fonts will ship with InDesign CS4:

ACaslonPro-Bold.otf
ACaslonPro-BoldItalic.otf
ACaslonPro-Italic.otf
ACaslonPro-Regular.otf
ACaslonPro-Semibold.otf
ACaslonPro-SemiboldItalic.otf
AGaramondPro-Bold.otf
AGaramondPro-BoldItalic.otf
AGaramondPro-Italic.otf
AGaramondPro-Regular.otf
BellGothicStd-Black.otf
BellGothicStd-Bold.otf
BirchStd.otf
BlackoakStd.otf
BrushScriptStd.otf
ChaparralPro-Bold.otf
ChaparralPro-BoldIt.otf
ChaparralPro-Italic.otf
ChaparralPro-Regular.otf
ChaparralPro-Light.otf
ChaparralPro-LightItalic.otf
CharlemagneStd-Bold.otf
CharlemagneStd-Regular.otf
CooperBlackStd-Italic.otf
CooperBlackStd.otf
EccentricStd.otf
GiddyupStd.otf
HoboStd.otf
KozGoPro-Bold.otf
KozGoPro-ExtraLight.otf
KozGoPro-Heavy.otf
KozGoPro-Light.otf
KozGoPro-Medium.otf
KozGoPro-Regular.otf
KozMinPro-Bold.otf
KozMinPro-ExtraLight.otf
KozMinPro-Heavy.otf
KozMinPro-Light.otf
KozMinPro-Medium.otf
KozMinPro-Regular.otf
LetterGothicStd-Bold.otf
LetterGothicStd-BoldSlanted.otf
LetterGothicStd-Slanted.otf
LetterGothicStd.otf
LithosPro-Black.otf
LithosPro-Bold.otf
LithosPro-Regular.otf
MesquiteStd.otf
MinionPro-Bold.otf
MinionPro-BoldCn.otf
MinionPro-BoldCnIt.otf
MinionPro-BoldIt.otf
MinionPro-It.otf
MinionPro-Medium.otf
MinionPro-MediumIt.otf
MinionPro-Regular.otf
MinionPro-Semibold.otf
MinionPro-SemiboldIt.otf
MyriadPro-Bold.otf
MyriadPro-BoldCond.otf
MyriadPro-BoldCondIt.otf
MyriadPro-BoldIt.otf
MyriadPro-Cond.otf
MyriadPro-CondIt.otf
MyriadPro-It.otf
MyriadPro-Light.otf
MyriadPro-LightIt.otf
MyriadPro-Regular.otf
MyriadPro-Semibold.otf
MyriadPro-SemiboldIt.otf
MyriadStd-Sketch.otf
MyriadStd-Tilt.otf
NewsGothicStd.otf
NewsGothicStd-Bold.otf
NewsGothicStd-Italic.otf
NewsGothicStd-BoldItalic.otf
NuevaStd-BoldCond.otf
NuevaStd-BoldCondItalic.otf
NuevaStd-Cond.otf
NuevaStd-CondItalic.otf
NuevaStd-Regular.otf
NuevaStd-Italic.otf
NuevaStd-Bold.otf
NuevaStd-BoldItalic.otf
NuevaStd-Light.otf
NuevaStd-LightItalic.otf
OCRAStd.otf
OratorStd-Slanted.otf
OratorStd.otf
PoplarStd.otf
PrestigeEliteStd-Bd.otf
RosewoodStd-Regular.otf
RosewoodStd-Fill.otf
StencilStd.otf
TektonPro-Bold.otf
TektonPro-BoldCond.otf
TektonPro-BoldExt.otf
TektonPro-BoldObl.otf
TrajanPro-Bold.otf
TrajanPro-Regular.otf
RyoDispStd-Medium.otf
RyoDispStd-SemiBold.otf
RyoDispStd-Bold.otf
RyoDispStd-Heavy.otf
RyoDispStd-ExtraBold.otf
RyoGothicStd-ExtraLight.otf
RyoGothicStd-Light.otf
RyoGothicStd-Medium.otf
RyoGothicStd-SemiBold.otf
RyoGothicStd-Bold.otf
RyoGothicStd-Heavy.otf
RyoGothicStd-ExtraBold.otf
RyoTextStd-ExtraLight.otf
RyoTextStd-Light.otf
RyoTextStd-Medium.otf
RyoTextStd-Regular.otf
AdobeHeitiStd-Regular.otf
AdobeMingStd-Light.otf
AdobeMyungjoStd-Medium.otf
AdobeSongStd-Light.otf
AdobeKaitiStd-Regular.otf
AdobeFangsongStd-Regular.otf
KozGoPr6N-Bold.otf
KozGoPr6N-ExtraLight.otf
KozGoPr6N-Heavy.otf
KozGoPr6N-Light.otf
KozGoPr6N-Medium.otf
KozGoPr6N-Regular.otf
KozMinPr6N-Bold.otf
KozMinPr6N-ExtraLight.otf
KozMinPr6N-Heavy.otf
KozMinPr6N-Light.otf
KozMinPr6N-Medium.otf
KozMinPr6N-Regular.otf