I've tested the following on NetBSD/i386 3.0, and manually found the
PLIST changes, and all seems well:

Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/lang/chicken/Makefile,v
retrieving revision 1.28
diff -u -r1.28 Makefile
--- Makefile    2 Jan 2007 13:49:01 -0000       1.28
+++ Makefile    17 Apr 2007 13:47:01 -0000
@@ -1,8 +1,8 @@
# $NetBSD: Makefile,v 1.28 2007/01/02 13:49:01 obache Exp $
#
-DISTNAME=      chicken-2.5
-PKGNAME=       chicken-2.50
+DISTNAME=      chicken-2.6
+PKGNAME=       chicken-2.60
CATEGORIES=    lang
MASTER_SITES=  http://www.call-with-current-continuation.org/
Index: PLIST
===================================================================
RCS file: /cvsroot/pkgsrc/lang/chicken/PLIST,v
retrieving revision 1.15
diff -u -r1.15 PLIST
--- PLIST       2 Jan 2007 13:49:01 -0000       1.15
+++ PLIST       17 Apr 2007 13:47:01 -0000
@@ -16,7 +16,6 @@
man/man1/chicken.1
man/man1/csc.1
man/man1/csi.1
-share/chicken/banner.scm
share/chicken/chicken-ffi-macros.scm
share/chicken/chicken-more-macros.scm
share/chicken/eval.exports
Index: distinfo
===================================================================
RCS file: /cvsroot/pkgsrc/lang/chicken/distinfo,v
retrieving revision 1.19
diff -u -r1.19 distinfo
--- distinfo    2 Jan 2007 13:49:01 -0000       1.19
+++ distinfo    17 Apr 2007 13:47:01 -0000
@@ -1,8 +1,8 @@
$NetBSD: distinfo,v 1.19 2007/01/02 13:49:01 obache Exp $
-SHA1 (chicken-2.5.tar.gz) = 5f0e160d5b803d4b51c649a3028124008507d4b6
-RMD160 (chicken-2.5.tar.gz) = 12beb80e77b9468d90605a27c96555053b3af9a3
-Size (chicken-2.5.tar.gz) = 3013368 bytes
+SHA1 (chicken-2.6.tar.gz) = 4010d21db1b0d2df3b3ab392503be4bb19073bbd
+RMD160 (chicken-2.6.tar.gz) = 0af0d79e85ee017d2ad2bfde79f4561f257c852c
+Size (chicken-2.6.tar.gz) = 3517981 bytes
SHA1 (patch-aa) = 3b84cfb79f4a5403f114373ae8d3f4298276eda1
SHA1 (patch-ab) = f21f147f13eb3e6a1e4eefdd51b7b24361e0ecf7
SHA1 (patch-ac) = b242e53311a44d581033bdca146dd5d2f4be441f

Thanks,

ABS

--
Alaric Snell-Pym
Work: http://www.snell-systems.co.uk/
Play: http://www.snell-pym.org.uk/alaric/
Blog: http://www.snell-pym.org.uk/?author=4