out-of-date vs outdated

out-of-date and outdated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
out-of-date	No	Yes	No	No
outdated	No	Yes	No	No

As adjectives, out-of-date and outdated are synonyms defined as:

Other synonyms of out-of-date include obsolete, superannuated.

out-of-date (adjective)	outdated (adjective)
old; no longer valid or fashionable	old; no longer valid or fashionable