As I was thinking VOSTOK token airdropped into my wallet was just a spam token since snapshot's date isn't announced yet. Waiting for more news on this matter

Hello.
I'm not sure what do you mean by wallet upgrading but Smart Assets can't be implemented to already existing tokens in case you mean that. You can read more about Waves' Smart Assets and SmartAccount Trading features here: https://blog.wavesplatform.com/smart-assets-and-smart-account-trading-features-released-on-mainnet-c295ee58bb13
Also, you get acquainted with more details concerning this feature via our documentation: https://docs.wavesplatform.com/en/technical-details/waves-contracts-language-description/approach-and-capabilities.html

Sincerely,
Waves Community Manager

some clarification for airdrop (which is not the end of the world !):

https://twitter.com/sasha35625/status/1082354044428001280

however still how much VST per WCT and WAVES is not known.

note that VST is also the ticker of vestarin on coingecko.com

No,
WCT will receive only 10%, rest for WAVES.

But that's only because there are 100 mil Waves and only 10 mil WCT. That's where the 10% comes from. In the end you will get the same amount of VST tokens per 1 Waves and per 1 WCT.

WCT is a quarter of the WAVES price, when the supply is 1/10. Hence, how can it be more profitable? Please clarify. Maybe my math is wrong...  

"Important #wavesplatform partnership to be announced tomorrow,
this will be the beginning of $waves integration into traditional payment infrastructure."


https://twitter.com/sasha35625/status/1083035953147437056


Do you have any clue about this "mysterious" partnership? Let's wait

Hello. Speaking about Vostok airdrop, you should hold your $WAVES or $WCT asset within your Waves account, not on external exchanges. According to the Sasha's tweet, the date of snapshot of holders will be revealed next week -- https://twitter.com/sasha35625/status/1082242361751556096
More specifications regarding to this event will be announced separately in our social media and news channels:
Telegram ann -- https://t.me/wavesnews
Twitter -- https://twitter.com/wavesplatform
Facebook -- https://www.facebook.com/wavesplatform

Sincerely,
Waves Community Manager

Token ticker of Vostok will be VST? When this airdrop happens and on which exchanges this token will be trading?

There weren't any official statements concerning the listing process on external exchanges. It will be definitely announced in our social media I provided a bit above later. Speaking about its ticker symbol, it remains unknown until Vostok become tradable but you can check some Sasha's statements, i.e. this one -- https://twitter.com/sasha35625/status/1082279155423633408

Kind regards,
Waves Community Manager