Adobe Reader 8 has been released. For what's new, read this.
O/S requirements are:
Windows Vista, XP SP2, 2003 Server, 2000 SP4
Mac 10.4.3-10.4.8 Power PC
Mac 10.4.4-10.4.8 Intel
Note: With some Windows versions they will by default include Adobe Photoshop Album Starter Edition with the download though you can de-select that option.