make.profile should change form 2005.1 to 2005.0 ??

Amorous

when I finished emerge sync, it told me as follow:
*******************************************
!!!Your current profile is deprecated and not support anymore
!!!Please upgrade to the following profile if possible
default-linux/x86/2005.0
# emerge -n '>=sys-apps/portage-2.0.51'
# cd /etc/
# rm make.profile
# ln -s ../usr/portage/profiles/default-linux/x86/2005.0 make.profile

# *** WARNING ***
# This is a development profile.  This means that this profile is not stable or suitable for general use.  This profile *will* change and could possibly be the cause of system breakage.  You will *not* be supported if using this profile!
****************************************
what shall I do? I had used 2005.1 for a long time ,but now they say "Your current profile is deprecated and not support anymore"
cry!