The phrase "after its unveiling" is correct and usable in written English.
It can be used to refer to the period or events that occur following the reveal or introduction of something, such as a product, artwork, or event.
Example: "The new smartphone received mixed reviews after its unveiling at the tech conference."
Alternatives: "following its reveal" or "subsequent to its launch".
Nine years after its unveiling, it still looks like the future.
It is believed the tablet was secretly moved to London after its unveiling in a Hastings car park, but no one has spotted it since.
After its unveiling on Oct. 20, visitors lined up for several hours to see it.
The best explanation is that, on April 6th, soon after its unveiling, there will be a general election.
Fifteen months after its unveiling at the Delhi motor show, the cheapest and most talked-about car of modern times has gone on sale.
It is not clear how Putin will capitalise on the naked torso of the River God after its unveiling – presumably not by striking the same pose, given its missing genitalia.
Alibaba has officially announced its move into the automobile space after it unveiled its first "internet car" in collaboration with SAIC, one of China's big four state-owned automakers.
Apple gained $9.20, or 1.4 percent, to $669.79 after it unveiled its iPhone 5. Facebook jumped $1.50, or 7.7 percent, to $20.93 after its chief executive, Mark Zuckerberg, hinted at new growth areas from mobile to search in his first major public appearance since the social network's rocky initial public offering in May.
The winner Twelve years after it unveiled its first movie Women Talking Dirty, David Furnish and Elton John's production company Rocket Pictures has finally come good with animation Gnomeo and Juliet, a bonafide hit with £2.92m in three days at the UK box office.
Xiaomi may be skipping Mobile World Congress, the year's biggest phone show, but it is still making news this week after it unveiled its first processor and the first phone it is powering.
A month after its official unveiling, Pioneer finally found it fit to release a pair of official demo videos of the AppRadio.
