According to Norman Geisler, who wrote commentary on the ICBI statements, the authors/signatories agreed that any kind of belief in “macro-evolution” [sic] was incompatible with belief in inerrancy.

(...) the use of the term “creation” was meant to exclude the belief in macro-evolution, whether of the atheistic or theistic varieties.

See especially the statement on “Biblical Hermeneutics,” Articles 19-22.

J. I. Packer signed the ICBI statements. Therefore, if Keller believes in theistic evolution (at least in the commonly accepted sense of the term), then he and those affirming ICBI, including Packer, disagree with each other about inerrancy.

A good book for an alternative approach to these issues is Beyond the Firmament by Gordon Glover. See his post on the PCA report here.