Can someone clear up for me whether the 2008 Time almanac really
constitutes a title change?

I was given it because it now says "powered by Encyclopedia Britannica"
and because "Information Please" is now nowhere to be found on it.

My take would be that Encyclopedia Britannica is functioning as a
publisher rather than as additional title information.  The new record
in OCLC (#180705772) has a 710 for Encyclopedia Britannica but has the
exact same 245 minus the article "The".    This seems to me to be a
minor change.

"Information Please" was added in 2000 to the 246 in the record (that we
have in our system) which began in 1998, and it's absence doesn't affect
the 245.  Am I right to continue to use this record: (OCoLC)38222513?

Patricia Fogler, Catalog Librarian
Muir S. Fairchild Research Information Center
600 Chennault Circle, Maxwell AFB, AL 36112
(334) 953-2135  patricia.fogler@maxwell.af.mil
https://catalog.au.af.mil
http://www.au.af.mil/au/aul/lane.htm