cutting edge
modern
latest
advanced
futuristic
well, obsolete means out of date, so the best i can think of is up to date or current.
new, experimental, on the drawing board, testworthy, futuristic
Outdated means obsolete, unfashionable, antiquated, and out of date. Something that is outdated is not modern and sometimes is no longer useful. The opposite of outdated is up-to-date or current.
Obsolete is an adjective.
OB is the abbreviation for obsolete.
dinosaurs are obsolete.
Obsolete
obsolete
Card readers are obsolete.
it was obsolete by the invention of the gun
Warriors are not, nor likely to be, obsolete.
Mankind Is Obsolete was created in 2002.