Adobe will officially announce Illustrator 10 and InDesign 2.0 later today at Seybold Seminars in San Francisco, California. Mac OS X plans for the two titles are as of yet unknown, although Adobe will ship Illustrator 10 before the year is out and plans to ship InDesign 2.0 in early 2002. At Macworld Expo New York in July, Adobe demonstrated early versions of both applications running under Mac OS X. Also at Seybold, Adobe will introduce AlterCast, a new, server-side application that enables Web developers to automatically replace site images and text.