Tech companies treat it like a holiday: every year, on fixed dates, they hold a big event and put the new things on stage all at once. But "announced on stage" and "you can use it today" are often months apart.
Every company has its own yearly event. The names differ but the job is the same: show this year's new things all at once.
DevDay, WWDC, I/O and Build are "developer conferences," aimed mainly at people who write programs. Events for ordinary buyers, like new phones and computers, are usually called "launch events." Exact dates shift each year, so go by the official announcement.
A new thing usually climbs a ladder like this between the stage and your hands. When the news says "launched," it may only be on the first rung.
Once you have all three, the news is useful to you. If you can't find them, treat it as a trailer.
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